METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A...

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METAL GASKET MATERIALS 713.692.7114 Fax 713.692.0735 1120 McDaniel Houston, Texas 77022 888.692.7114 • www.gulfrubberco.com

Transcript of METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A...

Page 1: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

METAL GASKETMATERIALS

713.692.7114 • Fax 713.692.07351120 McDaniel • Houston, Texas 77022888.692.7114 • www.gulfrubberco.com

Page 2: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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Page 3: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Page 4: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets for ASME B16.47 Series A Flanges(MSS SP-44) Class 150

Class 300Size

Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 27.7526 25.75 27.00 29.00 32.8828 27.75 29.00 31.00 35.3830 29.75 31.25 33.25 37.5032 31.75 33.50 35.50 39.6334 33.75 35.50 37.50 41.6336 35.75 37.63 39.63 44.0038 37.50 38.50 40.00 41.5040 39.50 40.25 42.13 43.8842 41.50 42.25 44.13 45.8844 43.50 44.50 46.50 48.0046 45.38 46.38 48.38 50.1348 47.63 48.63 50.63 52.1350 49.00 51.00 53.00 54.2552 52.00 53.00 55.00 56.2554 53.25 55.25 57.25 58.7556 55.25 57.25 59.25 60.7558 57.00 59.50 61.50 62.7560 60.00 61.50 63.50 64.75

Notes:1. Inner rings are required for all PTFE gaskets and for NPS 24 and 3. The gasket outside diameter tolerance for NPS 26 through

larger in Class 900, NPS 12 and larger in Class 1500, and NPS 4 and NPS 26 through NPS 60 is +0.06”. larger in Class 2500. 4. The centering ring outside diameter tolerance is +0.03”

2. The gasket inside diameter tolerance for NPS 26 through NPS 34 is 5. There are no Class 900 flanges in NPS 50 and larger.+0.03”, for NPS 36 through NPS 60 is +0.05”.

Size Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.00 26.0026 25.75 26.50 27.75 30.5028 27.75 28.50 29.75 32.7530 29.75 30.50 31.75 34.7532 31.75 32.50 33.88 37.0034 33.75 34.50 35.88 39.0036 35.75 36.50 38.13 41.2538 37.75 38.50 40.13 43.7540 39.75 40.50 42.13 45.7542 41.75 42.50 44.25 48.0044 43.75 44.50 46.38 50.2546 45.75 46.50 48.38 52.2548 47.75 48.50 50.38 54.5050 49.75 50.50 52.50 56.5052 51.75 52.50 54.50 58.7554 53.50 54.50 56.50 61.0056 55.50 56.50 58.50 63.2558 57.50 58.50 60.50 65.5060 59.50. 60.50 62.50 67.50

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets for ASME B16.47 Series A Flanges(MSS SP-44) Class 150

Class 300Size

Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 27.7526 25.75 27.00 29.00 32.8828 27.75 29.00 31.00 35.3830 29.75 31.25 33.25 37.5032 31.75 33.50 35.50 39.6334 33.75 35.50 37.50 41.6336 35.75 37.63 39.63 44.0038 37.50 38.50 40.00 41.5040 39.50 40.25 42.13 43.8842 41.50 42.25 44.13 45.8844 43.50 44.50 46.50 48.0046 45.38 46.38 48.38 50.1348 47.63 48.63 50.63 52.1350 49.00 51.00 53.00 54.2552 52.00 53.00 55.00 56.2554 53.25 55.25 57.25 58.7556 55.25 57.25 59.25 60.7558 57.00 59.50 61.50 62.7560 60.00 61.50 63.50 64.75

Notes:1. Inner rings are required for all PTFE gaskets and for NPS 24 and 3. The gasket outside diameter tolerance for NPS 26 through

larger in Class 900, NPS 12 and larger in Class 1500, and NPS 4 and NPS 26 through NPS 60 is +0.06”. larger in Class 2500. 4. The centering ring outside diameter tolerance is +0.03”

2. The gasket inside diameter tolerance for NPS 26 through NPS 34 is 5. There are no Class 900 flanges in NPS 50 and larger.+0.03”, for NPS 36 through NPS 60 is +0.05”.

Size Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.00 26.0026 25.75 26.50 27.75 30.5028 27.75 28.50 29.75 32.7530 29.75 30.50 31.75 34.7532 31.75 32.50 33.88 37.0034 33.75 34.50 35.88 39.0036 35.75 36.50 38.13 41.2538 37.75 38.50 40.13 43.7540 39.75 40.50 42.13 45.7542 41.75 42.50 44.25 48.0044 43.75 44.50 46.38 50.2546 45.75 46.50 48.38 52.2548 47.75 48.50 50.38 54.5050 49.75 50.50 52.50 56.5052 51.75 52.50 54.50 58.7554 53.50 54.50 56.50 61.0056 55.50 56.50 58.50 63.2558 57.50 58.50 60.50 65.5060 59.50. 60.50 62.50 67.50

Page 5: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets for ASME B16.47 Series A Flanges(MSS SP-44) Class 150

Class 300Size

Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 27.7526 25.75 27.00 29.00 32.8828 27.75 29.00 31.00 35.3830 29.75 31.25 33.25 37.5032 31.75 33.50 35.50 39.6334 33.75 35.50 37.50 41.6336 35.75 37.63 39.63 44.0038 37.50 38.50 40.00 41.5040 39.50 40.25 42.13 43.8842 41.50 42.25 44.13 45.8844 43.50 44.50 46.50 48.0046 45.38 46.38 48.38 50.1348 47.63 48.63 50.63 52.1350 49.00 51.00 53.00 54.2552 52.00 53.00 55.00 56.2554 53.25 55.25 57.25 58.7556 55.25 57.25 59.25 60.7558 57.00 59.50 61.50 62.7560 60.00 61.50 63.50 64.75

Notes:1. Inner rings are required for all PTFE gaskets and for NPS 24 and 3. The gasket outside diameter tolerance for NPS 26 through

larger in Class 900, NPS 12 and larger in Class 1500, and NPS 4 and NPS 26 through NPS 60 is +0.06”. larger in Class 2500. 4. The centering ring outside diameter tolerance is +0.03”

2. The gasket inside diameter tolerance for NPS 26 through NPS 34 is 5. There are no Class 900 flanges in NPS 50 and larger.+0.03”, for NPS 36 through NPS 60 is +0.05”.

Size Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.00 26.0026 25.75 26.50 27.75 30.5028 27.75 28.50 29.75 32.7530 29.75 30.50 31.75 34.7532 31.75 32.50 33.88 37.0034 33.75 34.50 35.88 39.0036 35.75 36.50 38.13 41.2538 37.75 38.50 40.13 43.7540 39.75 40.50 42.13 45.7542 41.75 42.50 44.25 48.0044 43.75 44.50 46.38 50.2546 45.75 46.50 48.38 52.2548 47.75 48.50 50.38 54.5050 49.75 50.50 52.50 56.5052 51.75 52.50 54.50 58.7554 53.50 54.50 56.50 61.0056 55.50 56.50 58.50 63.2558 57.50 58.50 60.50 65.5060 59.50. 60.50 62.50 67.50

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets for ASME B16.47 Series A Flanges(MSS SP-44) Class 150

Class 300Size

Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 27.7526 25.75 27.00 29.00 32.8828 27.75 29.00 31.00 35.3830 29.75 31.25 33.25 37.5032 31.75 33.50 35.50 39.6334 33.75 35.50 37.50 41.6336 35.75 37.63 39.63 44.0038 37.50 38.50 40.00 41.5040 39.50 40.25 42.13 43.8842 41.50 42.25 44.13 45.8844 43.50 44.50 46.50 48.0046 45.38 46.38 48.38 50.1348 47.63 48.63 50.63 52.1350 49.00 51.00 53.00 54.2552 52.00 53.00 55.00 56.2554 53.25 55.25 57.25 58.7556 55.25 57.25 59.25 60.7558 57.00 59.50 61.50 62.7560 60.00 61.50 63.50 64.75

Notes:1. Inner rings are required for all PTFE gaskets and for NPS 24 and 3. The gasket outside diameter tolerance for NPS 26 through

larger in Class 900, NPS 12 and larger in Class 1500, and NPS 4 and NPS 26 through NPS 60 is +0.06”. larger in Class 2500. 4. The centering ring outside diameter tolerance is +0.03”

2. The gasket inside diameter tolerance for NPS 26 through NPS 34 is 5. There are no Class 900 flanges in NPS 50 and larger.+0.03”, for NPS 36 through NPS 60 is +0.05”.

Size Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.00 26.0026 25.75 26.50 27.75 30.5028 27.75 28.50 29.75 32.7530 29.75 30.50 31.75 34.7532 31.75 32.50 33.88 37.0034 33.75 34.50 35.88 39.0036 35.75 36.50 38.13 41.2538 37.75 38.50 40.13 43.7540 39.75 40.50 42.13 45.7542 41.75 42.50 44.25 48.0044 43.75 44.50 46.38 50.2546 45.75 46.50 48.38 52.2548 47.75 48.50 50.38 54.5050 49.75 50.50 52.50 56.5052 51.75 52.50 54.50 58.7554 53.50 54.50 56.50 61.0056 55.50 56.50 58.50 63.2558 57.50 58.50 60.50 65.5060 59.50. 60.50 62.50 67.50

Class 400Size

Inner Ring Sealing Element Outer Ring

NPS Inside (A)Diameter

Inside (B)Diameter

Outside (C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 27.6326 26.00 27.00 29.00 32.7528 28.00 29.00 31.00 35.1330 29.75 31.25 33.25 37.2532 32.00 33.50 35.50 39.5034 34.00 35.50 37.50 41.5036 36.13 37.63 39.63 44.0038 37.50 38.25 40.25 42.2540 39.38 40.38 42.38 44.3842 41.38 42.38 44.38 46.3844 43.50 44.50 46.50 48.5046 46.00 47.00 49.00 50.7548 47.50 49.00 51.00 53.0050 49.50 51.00 53.00 55.2552 51.50 53.00 55.00 57.2554 53.25 55.25 57.25 59.7556 55.25 57.25 59.25 61.7558 57.25 59.25 61.25 63.7560 59.75 61.75 63.75 66.25

Page 6: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets forASME B16.47 Series A flanges(MSS SP-44)

Class 600Size

InnerRing Sealing Element Outer

RingNPS Inside (A)

DiameterInside (B)Diameter

Outside(C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 28.8826 25.50 27.00 29.00 34.1328 27.50 29.00 31.00 36.0030 29.75 31.25 33.25 38.2532 32.00 33.50 35.50 40.2534 34.00 35.50 37.50 42.2536 36.13 37.63 39.63 44.5038 37.50 39.00 41.00 43.5040 39.75 41.25 43.25 45.5042 42.00 43.50 45.50 48.0044 43.75 45.75 47.75 50.0046 45.75 47.75 49.75 52.2548 48.00 50.00 52.00 54.7550 50.00 52.00 54.00 57.0052 52.00 54.00 56.00 59.0054 54.25 56.25 58.25 61.2556 56.26 58.25 60.25 63.5058 58.00 60.50 62.50 65.5060 60.25 62.75 64.75 68.25

Class 900Size Inner Ring Sealing Element Outer RingNPS Inside (A)

DiameterInside (B) Diameter

Outside (C) Diameter

Outside (D) Diameter

22” - 24.25 27.00 33.0026 26.00 27.00 29.00 34.7528 28.00 29.00 31.00 37.2530 30.25 31.25 33.25 39.7532 32.00 33.50 35.50 42.2534 34.00 35.50 37.50 44.7536 36.25 37.75 39.75 47.2538 39.75 40.75 42.75 47.2540 41.75 43.25 45.25 49.2542 43.75 45.25 47.25 51.2544 45.50 47.50 49.50 53.8846 48.00 50.00 52.00 56.5048 50.00 52.00 54.00 58.50

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets forASME B16.47 Series A flanges(MSS SP-44)

Class 600Size

InnerRing Sealing Element Outer

RingNPS Inside (A)

DiameterInside (B)Diameter

Outside(C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 28.8826 25.50 27.00 29.00 34.1328 27.50 29.00 31.00 36.0030 29.75 31.25 33.25 38.2532 32.00 33.50 35.50 40.2534 34.00 35.50 37.50 42.2536 36.13 37.63 39.63 44.5038 37.50 39.00 41.00 43.5040 39.75 41.25 43.25 45.5042 42.00 43.50 45.50 48.0044 43.75 45.75 47.75 50.0046 45.75 47.75 49.75 52.2548 48.00 50.00 52.00 54.7550 50.00 52.00 54.00 57.0052 52.00 54.00 56.00 59.0054 54.25 56.25 58.25 61.2556 56.26 58.25 60.25 63.5058 58.00 60.50 62.50 65.5060 60.25 62.75 64.75 68.25

Class 900Size Inner Ring Sealing Element Outer RingNPS Inside (A)

DiameterInside (B) Diameter

Outside (C) Diameter

Outside (D) Diameter

22” - 24.25 27.00 33.0026 26.00 27.00 29.00 34.7528 28.00 29.00 31.00 37.2530 30.25 31.25 33.25 39.7532 32.00 33.50 35.50 42.2534 34.00 35.50 37.50 44.7536 36.25 37.75 39.75 47.2538 39.75 40.75 42.75 47.2540 41.75 43.25 45.25 49.2542 43.75 45.25 47.25 51.2544 45.50 47.50 49.50 53.8846 48.00 50.00 52.00 56.5048 50.00 52.00 54.00 58.50

Styles CG, CGI Dimensions22-60” Series A Flanges

ASME B16.20 Gaskets forASME B16.47 Series A flanges(MSS SP-44)

Class 600Size

InnerRing Sealing Element Outer

RingNPS Inside (A)

DiameterInside (B)Diameter

Outside(C)Diameter

Outside (D)Diameter

22” - 22.75 24.75 28.8826 25.50 27.00 29.00 34.1328 27.50 29.00 31.00 36.0030 29.75 31.25 33.25 38.2532 32.00 33.50 35.50 40.2534 34.00 35.50 37.50 42.2536 36.13 37.63 39.63 44.5038 37.50 39.00 41.00 43.5040 39.75 41.25 43.25 45.5042 42.00 43.50 45.50 48.0044 43.75 45.75 47.75 50.0046 45.75 47.75 49.75 52.2548 48.00 50.00 52.00 54.7550 50.00 52.00 54.00 57.0052 52.00 54.00 56.00 59.0054 54.25 56.25 58.25 61.2556 56.26 58.25 60.25 63.5058 58.00 60.50 62.50 65.5060 60.25 62.75 64.75 68.25

Class 900Size Inner Ring Sealing Element Outer RingNPS Inside (A)

DiameterInside (B) Diameter

Outside (C) Diameter

Outside (D) Diameter

22” - 24.25 27.00 33.0026 26.00 27.00 29.00 34.7528 28.00 29.00 31.00 37.2530 30.25 31.25 33.25 39.7532 32.00 33.50 35.50 42.2534 34.00 35.50 37.50 44.7536 36.25 37.75 39.75 47.2538 39.75 40.75 42.75 47.2540 41.75 43.25 45.25 49.2542 43.75 45.25 47.25 51.2544 45.50 47.50 49.50 53.8846 48.00 50.00 52.00 56.5048 50.00 52.00 54.00 58.50

Page 7: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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Style CG & CGI DimensionsStyle CG & CGI

Gasket Dimensions for Class 150 Series BDimensions as per ASME B16.21 for Flanges ASME B16.47 Series B

Style CG & CGIGasket Dimensions for Class 300 Series B

Dimensions as per ASME B16.21 for Flanges ASME B16.47 Series B

Nominal Diameter Inside Diameter Outside Diameter 26” 26.00” 28.56” 28” 28.00” 30.56” 30” 30.00” 32.56” 32” 32.00” 34.69” 34” 34.00” 36.81” 36” 36.00” 38.88” 38” 38.00” 41.12” 40” 40.00” 43.12” 42” 42.00” 45.12” 44” 44.00” 47.12” 46” 46.00” 49.44” 48” 48.00” 51.44” 50” 50.00” 53.44” 52” 52.00” 55.44” 54” 54.00” 57.62” 56” 56.00” 59.62” 58” 58.00” 62.19” 60” 60.00” 64.19”

!

Nominal Diameter Inside Diameter Outside Diameter 26” 26.00” 30.38” 28” 28.00” 32.50” 30” 30.00” 34.88” 32” 32.00” 37.00” 34” 34.00” 39.12” 36” 36.00” 41.25” 38” 38.00” 43.25” 40” 40.00” 45.25” 42” 42.00” 47.25” 44” 44.00” 49.25” 46” 46.00” 51.88” 48” 48.00” 53.88” 50” 50.00” 55.88” 52” 52.00” 57.88” 54” 54.00” 51.25” 56” 56.00” 62.75” 58” 58.00” 65.19” 60” 60.00” 67.12”

 

Page 8: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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Style CG & CGI Dimensions

Nominal Diameter Inside Diameter Outside Diameter 26” 26.00” 29.38” 28” 28.00” 31.50” 30” 30.00” 33.75” 32” 32.00” 35.88” 34” 34.00” 37.88” 36” 36.00” 40.25” 38” 38.00” - 40” 40.00” - 42” 42.00” - 44” 44.00” - 46” 46.00” - 48” 48.00” - 50” 50.00” - 52” 52.00” - 54” 54.00” - 56” 56.00” - 58” 58.00” - 60” 60.00” -

 

Nominal Diameter Inside Diameter Outside Diameter 26” 26.00” 30.12” 28” 28.00” 32.25” 30” 30.00” 34.62” 32” 32.00” 36.75” 34” 34.00” 39.25” 36” 36.00” 41.25” 38” 38.00” - 40” 40.00” - 42” 42.00” - 44” 44.00” - 46” 46.00” - 48” 48.00” - 50” 50.00” - 52” 52.00” - 54” 54.00” - 56” 56.00” - 58” 58.00” - 60” 60.00” -

 

Style CG & CGIGasket Dimensions for Class 400 Series B

Dimensions as per ASME B16.21 for Flanges ASME B16.47 Series B

Style CG & CGIGasket Dimensions for Class 600 Series B

Dimensions as per ASME B16.21 for Flanges ASME B16.47 Series B

Page 9: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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Dimensions for CG & CGI

Page 10: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Page 11: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Page 12: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Page 13: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GASKETS & GASKET MATERIALS

Page 14: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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GlossaryAA | Burr

This glossary does not give all the definitions for a word, only those which apply to the use of the word as found in this manual. The reader should also refer to a standard English dictionary or consult factory for definitions of trademarks or special terms.

AA. Arithmetic Average. A term for surface finish measurement. It is the same as Ra and CLA, and is calculated by measuring the average deviation of surface irregularities from a mean line.

abrasion resistance. The property of a material which resists the cutting action of sharp edges or hard particles.

abrasive. 1. a substance which abrades the seal, such as sand or dirt. 2. Exerting a cutting action on the seal, such as sand or dirt. 2. Exerting a cutting action on the seal (e.g. a rough mating surface can be abrasive to the seal).

aluminum oxide. Also alumina. Any of several forms of aluminum oxide, AI²O³, occurring naturally as corundum, in a hydrated form in bauxite, and with various impurities as ruby, sapphire and emery. In seal hardware design it is produced on aluminum alloys by an anodizing process resulting in a very hard, wear resistant, and corrosion-resistant mating surface. On other metals, it can be produced by a thermal-spray-coating process.

ambient temperature. The surrounding temperature of the environment, assumed to be 70ºF unless otherwise stated.

anneal. To subject a material (such as glass, plastic, etc.) to a process of heating and slow cooling in order to increase toughness, reduce brittleness, or improve dimensional stability.

aqueous. Pertaining to, similar to, containing, or dissolved in water; watery. Refers to media that are water-based, or aqueous solutions.

aromatic. Of, pertaining to, or containing the six-carbon ring characteristic of the benzene series or related organic groups. Also see aromatic hydrocarbon.

aromatic hydrocarbon. A hydrocarbon with a molecular structure involving one or more rings of six carbon atoms, and having properties similar to benzene, which is the simplest of the aromatic hydrocarbons. Other members of this family include many solvents for plastics.

autoclave. 1. A strong, pressurized, steam-heated vessel, used to establish special conditions for chemical reactions, for sterilization, and for cooking. 2. To subject a food-handling or medical instrument to sterilization in an autoclave to disinfect or sterilize the component.

ballizing. A procedure for final sizing and finishing of holes in metal components. An oversized precision ball, typically a very hard material such as tungsten carbide, is pressed through an unfinished hole to burnish it and harden it by cold working.

bar. A unit of measure of pressure equal to 105 newtons per square meter of 0.987 standard atmospheres.

benzene. A clear, colorless, flammable liquid C6H6 derived from petroleum and used in, or to manufacture a wide variety of chemical products including detergents, insecticides, and motor fuels. Also called “benzol”. Also see hydrocarbon.

bidirectional. Operating in two directions at once, such s bidirectional pressure. A seal which is bidirectional can seal two different media, or media acting from two opposing directions, especially when the pressure differential switches from one side of the seal to the other.

breakout friction. The initial frictional force between two unmoving surfaces which must be overcome to get one surface into motion against the other.

Brinell hardness. The hardness of metals and alloys, determined by forcing a steel ball into a test piece under standard conditions and measuring the surface area of the resulting indentation. Named after Johann A. Brinell (1849-1925), Swedish Engineer.

Brinell number. The numerical value assigned to the Brinell hardness of metals and alloys.

burnish. To polish, smooth, or make glossy as if by rubbing.

burr. A rough edge or area remaining on metal or other material after it has been cast, cut or drilled.

GlossaryAA | Burr

This glossary does not give all the definitions for a word, only those which apply to the use of the word as found in this manual. The reader should also refer to a standard English dictionary or consult factory for definitions of trademarks or special terms.

AA. Arithmetic Average. A term for surface finish measurement. It is the same as Ra and CLA, and is calculated by measuring the average deviation of surface irregularities from a mean line.

abrasion resistance. The property of a material which resists the cutting action of sharp edges or hard particles.

abrasive. 1. a substance which abrades the seal, such as sand or dirt. 2. Exerting a cutting action on the seal, such as sand or dirt. 2. Exerting a cutting action on the seal (e.g. a rough mating surface can be abrasive to the seal).

aluminum oxide. Also alumina. Any of several forms of aluminum oxide, AI²O³, occurring naturally as corundum, in a hydrated form in bauxite, and with various impurities as ruby, sapphire and emery. In seal hardware design it is produced on aluminum alloys by an anodizing process resulting in a very hard, wear resistant, and corrosion-resistant mating surface. On other metals, it can be produced by a thermal-spray-coating process.

ambient temperature. The surrounding temperature of the environment, assumed to be 70ºF unless otherwise stated.

anneal. To subject a material (such as glass, plastic, etc.) to a process of heating and slow cooling in order to increase toughness, reduce brittleness, or improve dimensional stability.

aqueous. Pertaining to, similar to, containing, or dissolved in water; watery. Refers to media that are water-based, or aqueous solutions.

aromatic. Of, pertaining to, or containing the six-carbon ring characteristic of the benzene series or related organic groups. Also see aromatic hydrocarbon.

aromatic hydrocarbon. A hydrocarbon with a molecular structure involving one or more rings of six carbon atoms, and having properties similar to benzene, which is the simplest of the aromatic hydrocarbons. Other members of this family include many solvents for plastics.

autoclave. 1. A strong, pressurized, steam-heated vessel, used to establish special conditions for chemical reactions, for sterilization, and for cooking. 2. To subject a food-handling or medical instrument to sterilization in an autoclave to disinfect or sterilize the component.

ballizing. A procedure for final sizing and finishing of holes in metal components. An oversized precision ball, typically a very hard material such as tungsten carbide, is pressed through an unfinished hole to burnish it and harden it by cold working.

bar. A unit of measure of pressure equal to 105 newtons per square meter of 0.987 standard atmospheres.

benzene. A clear, colorless, flammable liquid C6H6 derived from petroleum and used in, or to manufacture a wide variety of chemical products including detergents, insecticides, and motor fuels. Also called “benzol”. Also see hydrocarbon.

bidirectional. Operating in two directions at once, such s bidirectional pressure. A seal which is bidirectional can seal two different media, or media acting from two opposing directions, especially when the pressure differential switches from one side of the seal to the other.

breakout friction. The initial frictional force between two unmoving surfaces which must be overcome to get one surface into motion against the other.

Brinell hardness. The hardness of metals and alloys, determined by forcing a steel ball into a test piece under standard conditions and measuring the surface area of the resulting indentation. Named after Johann A. Brinell (1849-1925), Swedish Engineer.

Brinell number. The numerical value assigned to the Brinell hardness of metals and alloys.

burnish. To polish, smooth, or make glossy as if by rubbing.

burr. A rough edge or area remaining on metal or other material after it has been cast, cut or drilled.

GLOSSARY

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GlossaryAA | Burr

This glossary does not give all the definitions for a word, only those which apply to the use of the word as found in this manual. The reader should also refer to a standard English dictionary or consult factory for definitions of trademarks or special terms.

AA. Arithmetic Average. A term for surface finish measurement. It is the same as Ra and CLA, and is calculated by measuring the average deviation of surface irregularities from a mean line.

abrasion resistance. The property of a material which resists the cutting action of sharp edges or hard particles.

abrasive. 1. a substance which abrades the seal, such as sand or dirt. 2. Exerting a cutting action on the seal, such as sand or dirt. 2. Exerting a cutting action on the seal (e.g. a rough mating surface can be abrasive to the seal).

aluminum oxide. Also alumina. Any of several forms of aluminum oxide, AI²O³, occurring naturally as corundum, in a hydrated form in bauxite, and with various impurities as ruby, sapphire and emery. In seal hardware design it is produced on aluminum alloys by an anodizing process resulting in a very hard, wear resistant, and corrosion-resistant mating surface. On other metals, it can be produced by a thermal-spray-coating process.

ambient temperature. The surrounding temperature of the environment, assumed to be 70ºF unless otherwise stated.

anneal. To subject a material (such as glass, plastic, etc.) to a process of heating and slow cooling in order to increase toughness, reduce brittleness, or improve dimensional stability.

aqueous. Pertaining to, similar to, containing, or dissolved in water; watery. Refers to media that are water-based, or aqueous solutions.

aromatic. Of, pertaining to, or containing the six-carbon ring characteristic of the benzene series or related organic groups. Also see aromatic hydrocarbon.

aromatic hydrocarbon. A hydrocarbon with a molecular structure involving one or more rings of six carbon atoms, and having properties similar to benzene, which is the simplest of the aromatic hydrocarbons. Other members of this family include many solvents for plastics.

autoclave. 1. A strong, pressurized, steam-heated vessel, used to establish special conditions for chemical reactions, for sterilization, and for cooking. 2. To subject a food-handling or medical instrument to sterilization in an autoclave to disinfect or sterilize the component.

ballizing. A procedure for final sizing and finishing of holes in metal components. An oversized precision ball, typically a very hard material such as tungsten carbide, is pressed through an unfinished hole to burnish it and harden it by cold working.

bar. A unit of measure of pressure equal to 105 newtons per square meter of 0.987 standard atmospheres.

benzene. A clear, colorless, flammable liquid C6H6 derived from petroleum and used in, or to manufacture a wide variety of chemical products including detergents, insecticides, and motor fuels. Also called “benzol”. Also see hydrocarbon.

bidirectional. Operating in two directions at once, such s bidirectional pressure. A seal which is bidirectional can seal two different media, or media acting from two opposing directions, especially when the pressure differential switches from one side of the seal to the other.

breakout friction. The initial frictional force between two unmoving surfaces which must be overcome to get one surface into motion against the other.

Brinell hardness. The hardness of metals and alloys, determined by forcing a steel ball into a test piece under standard conditions and measuring the surface area of the resulting indentation. Named after Johann A. Brinell (1849-1925), Swedish Engineer.

Brinell number. The numerical value assigned to the Brinell hardness of metals and alloys.

burnish. To polish, smooth, or make glossy as if by rubbing.

burr. A rough edge or area remaining on metal or other material after it has been cast, cut or drilled.

GlossaryAA | Burr

This glossary does not give all the definitions for a word, only those which apply to the use of the word as found in this manual. The reader should also refer to a standard English dictionary or consult factory for definitions of trademarks or special terms.

AA. Arithmetic Average. A term for surface finish measurement. It is the same as Ra and CLA, and is calculated by measuring the average deviation of surface irregularities from a mean line.

abrasion resistance. The property of a material which resists the cutting action of sharp edges or hard particles.

abrasive. 1. a substance which abrades the seal, such as sand or dirt. 2. Exerting a cutting action on the seal, such as sand or dirt. 2. Exerting a cutting action on the seal (e.g. a rough mating surface can be abrasive to the seal).

aluminum oxide. Also alumina. Any of several forms of aluminum oxide, AI²O³, occurring naturally as corundum, in a hydrated form in bauxite, and with various impurities as ruby, sapphire and emery. In seal hardware design it is produced on aluminum alloys by an anodizing process resulting in a very hard, wear resistant, and corrosion-resistant mating surface. On other metals, it can be produced by a thermal-spray-coating process.

ambient temperature. The surrounding temperature of the environment, assumed to be 70ºF unless otherwise stated.

anneal. To subject a material (such as glass, plastic, etc.) to a process of heating and slow cooling in order to increase toughness, reduce brittleness, or improve dimensional stability.

aqueous. Pertaining to, similar to, containing, or dissolved in water; watery. Refers to media that are water-based, or aqueous solutions.

aromatic. Of, pertaining to, or containing the six-carbon ring characteristic of the benzene series or related organic groups. Also see aromatic hydrocarbon.

aromatic hydrocarbon. A hydrocarbon with a molecular structure involving one or more rings of six carbon atoms, and having properties similar to benzene, which is the simplest of the aromatic hydrocarbons. Other members of this family include many solvents for plastics.

autoclave. 1. A strong, pressurized, steam-heated vessel, used to establish special conditions for chemical reactions, for sterilization, and for cooking. 2. To subject a food-handling or medical instrument to sterilization in an autoclave to disinfect or sterilize the component.

ballizing. A procedure for final sizing and finishing of holes in metal components. An oversized precision ball, typically a very hard material such as tungsten carbide, is pressed through an unfinished hole to burnish it and harden it by cold working.

bar. A unit of measure of pressure equal to 105 newtons per square meter of 0.987 standard atmospheres.

benzene. A clear, colorless, flammable liquid C6H6 derived from petroleum and used in, or to manufacture a wide variety of chemical products including detergents, insecticides, and motor fuels. Also called “benzol”. Also see hydrocarbon.

bidirectional. Operating in two directions at once, such s bidirectional pressure. A seal which is bidirectional can seal two different media, or media acting from two opposing directions, especially when the pressure differential switches from one side of the seal to the other.

breakout friction. The initial frictional force between two unmoving surfaces which must be overcome to get one surface into motion against the other.

Brinell hardness. The hardness of metals and alloys, determined by forcing a steel ball into a test piece under standard conditions and measuring the surface area of the resulting indentation. Named after Johann A. Brinell (1849-1925), Swedish Engineer.

Brinell number. The numerical value assigned to the Brinell hardness of metals and alloys.

burnish. To polish, smooth, or make glossy as if by rubbing.

burr. A rough edge or area remaining on metal or other material after it has been cast, cut or drilled.

CAD | Cold flow

CAD. Computer Assisted Design.

cantilever beam. A beam with one end projecting beyond the point of support, free to move in a vertical plane under the influence of vertical loads placed between the free end and the support.

cantilever beam spring. A type of spring used in seals. A metal strip stock is formed into a “V” shape which appears as two cantilever beams when viewed on the cross-section.

carbon fiber. An additive used in certain blends to increase wear resistance, extrusion resistance, and high-temperature capability.

cc/min. Cubic centimeters per minute.

CFC. Abbreviation for chlorofluorocarbon.

cgs. Centimeter-gram-second. Of relating to, or being a system of units based upon the centimeter as the unit of length, the gram as the unit of mass, and the mean solar second as the unit of time.

chamfer. 1. To cut off the edge or corner of; bevel. 2. A flat surface made by cutting off the edge or corner of something, such as the end of a shaft or entrance to a housing or bore.

chlorofluorocarbons. Chemicals containing only chlorine, fluorine, and carbon, eg. Freon®.

chrome plating. An electrolytic process of depositing chromium on metals either as a protection against corrosion or to increase the surface-wearing qualities. Also see hard chrome and thin-dense chrome.

chromium oxide. An extremely hard coating applied by a thermal-spray-coating process to improve wear resistance of moving parts.

CLA. Center Line Average. A type of surface finish measurement, the same as Ra and AA.

clearance fit. A condition where one mechanical part is fitted into another in such a way as to leave a small gap or clearance between the parts. Compare interference fit.

clearance-gap. See extrusion-gap.

clearance-seal. A type of seal which does not make direct positive contact with its mating surface. Typically there is a small clearance, or a series of clearances between the seal and its mating surface, which create pressure drops to reduce the flow of a fluid past the seal. Compare positive seal.

coating. A thin layer of material covering something else. Examples: a thin layer of metal applied to a shaft or bore surface to increase hardness and wear resistance, or a Teflon® coating for chemical compatibility or self-lubricating properties.

coefficient. A numerical measure of a physical or chemical property that is constant for a system under specified conditions.

coefficient of friction. The numerical constant expressing the ratio of the force required to overcome friction in order to slide an object along a surface, and the mass of that object. For example: a ten-pound mass resting on a specified surface and required 5 pounds of linear force to move it has a coefficient of friction of 0.5 on that surface.

CNC. Abbreviation for Computer Numerically Controlled. CNC refers to machining equipment where tool motion and spindle speeds are controlled by a computer program.

cold drawn. Drawn or pulled, as a wire through a die, without prior heating.

cold flow. Distortion of a material under load (such as a plastic seal molding itself to the shape of the gland due to media pressure). Also see creep.

GLOSSARY

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Cold work | EPA

cold work. The deliberate deformation of a metal at relatively low temperatures to improve strength or surface hardness.

compression molding. The method of molding a material in a confined cavity by applying pressure and usually heat.

compression set. A permanent deformation, or set, resulting from compressive stress.

counterbore. A flat-bottomed, cylindrical recess, normally intended to permit the head of a fastening device, such as a bolt, to lie recessed in the part.

cpm. Cycles per minute. In reciprocating service a cycle includes one complete execution of the forward and backward stroke of a rod or piston. CPM designates the number of such cycles completed in one minute. Also see cycle rate.

cps. Cycles per second. Also see hertz.

creep. The time-dependent part of strain resulting from stress.

cross-section. 1. A section formed by a plane cutting through an object, usually at right angles to an axis. 2. A piece so cute or the graphic representation of such a piece.

CRS. Cold-rolled steel.

cryogenic. Of or relating to cryogenics. Cryogenic temperature typically refers to a very low temperature below about -200º F.

cryogenics. The science of low-temperature phenomena.

cycle rate. The rate at which a piston, rod or other device reciprocates, generally stated in cycles per minute (cpm) or cycles per second (ops or hertz).

dead volume. Also dead space. The unfilled area of a pump or seal cavity where air or other fluids can be trapped reducing the pump’s efficiency.

deflection. 1. The movement of a structure or structural part as a result of stress. 2. The deviation from zero shown by the indicator of a measuring instrument.

diametral clearance. Also diametrical clearance. The gap between two cylindrical metal surfaces, measured as the difference between the diameter of the inner piece and the diameter of the cylinder in which it rides.

dry service. Dry means free from liquid or moisture; not wet, damp or moistened. In sealing applications, dry service refers to sealing with a lack of lubricating fluid, making a high-wear condition.

duty cycle. Duty refers to the work capability of a machine under specified conditions. The duty cycle is the frequency and duration of times that a piece of equipment is in operation, as opposed to sitting idle. Example: a pump operates 7 days per week, 35 times per day, for 3 minutes each time.

dynamic seal. A seal which sees relative motion on at least one surface, e.g. a rotary shaft seal or a reciprocating rod seal.

Elgiloy®. A registered trademark of Elgiloy Limited Partnership for their cobalt-chromium-nickel alloy (UNS-R30003 and WD 13822).

elongation. In tensile testing, elongation is the increase in length of a specimen at the instant before rupture occurs. Percent elongation is expressed as the increase in distance between two gauge marks at rupture, divided by the original distance between the marks, the quotient being multiplied by 100.

embrittlement. The condition of becoming brittle.

EPA. Environmental Protection Agency. Responsible for developing and enforcing regulations concerning air quality, water quality,ozone protection, and related issues.

GLOSSARY

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Cold work | EPA

cold work. The deliberate deformation of a metal at relatively low temperatures to improve strength or surface hardness.

compression molding. The method of molding a material in a confined cavity by applying pressure and usually heat.

compression set. A permanent deformation, or set, resulting from compressive stress.

counterbore. A flat-bottomed, cylindrical recess, normally intended to permit the head of a fastening device, such as a bolt, to lie recessed in the part.

cpm. Cycles per minute. In reciprocating service a cycle includes one complete execution of the forward and backward stroke of a rod or piston. CPM designates the number of such cycles completed in one minute. Also see cycle rate.

cps. Cycles per second. Also see hertz.

creep. The time-dependent part of strain resulting from stress.

cross-section. 1. A section formed by a plane cutting through an object, usually at right angles to an axis. 2. A piece so cute or the graphic representation of such a piece.

CRS. Cold-rolled steel.

cryogenic. Of or relating to cryogenics. Cryogenic temperature typically refers to a very low temperature below about -200º F.

cryogenics. The science of low-temperature phenomena.

cycle rate. The rate at which a piston, rod or other device reciprocates, generally stated in cycles per minute (cpm) or cycles per second (ops or hertz).

dead volume. Also dead space. The unfilled area of a pump or seal cavity where air or other fluids can be trapped reducing the pump’s efficiency.

deflection. 1. The movement of a structure or structural part as a result of stress. 2. The deviation from zero shown by the indicator of a measuring instrument.

diametral clearance. Also diametrical clearance. The gap between two cylindrical metal surfaces, measured as the difference between the diameter of the inner piece and the diameter of the cylinder in which it rides.

dry service. Dry means free from liquid or moisture; not wet, damp or moistened. In sealing applications, dry service refers to sealing with a lack of lubricating fluid, making a high-wear condition.

duty cycle. Duty refers to the work capability of a machine under specified conditions. The duty cycle is the frequency and duration of times that a piece of equipment is in operation, as opposed to sitting idle. Example: a pump operates 7 days per week, 35 times per day, for 3 minutes each time.

dynamic seal. A seal which sees relative motion on at least one surface, e.g. a rotary shaft seal or a reciprocating rod seal.

Elgiloy®. A registered trademark of Elgiloy Limited Partnership for their cobalt-chromium-nickel alloy (UNS-R30003 and WD 13822).

elongation. In tensile testing, elongation is the increase in length of a specimen at the instant before rupture occurs. Percent elongation is expressed as the increase in distance between two gauge marks at rupture, divided by the original distance between the marks, the quotient being multiplied by 100.

embrittlement. The condition of becoming brittle.

EPA. Environmental Protection Agency. Responsible for developing and enforcing regulations concerning air quality, water quality,ozone protection, and related issues.

Ethylene-propylene rubber | Hand chrome plating

ethylene-propylene rubber. (EPR, EPM, EPDM) A group of elastomers obtained by the copolymerization of ethylene and propylene (EPM), or one of these two monomers and a third monomer such as diene (EPDM). Their properties are similar to those of natural rubber in many respects.

fatigue. Weakness in metal, wood or other material resulting from prolonged stress.

FDA. Food and Drug Administration. Responsible for developing and enforcing regulations concerning safety of foods, drugs, food-handling equipment, etc.

feet per minute. Abbr. fpm. The distance in feet traveled in one minute. Example: a piston with a 3 inch stroke, moving at a rate of 10 cpm has a surface speed of 5 fpm. Also see sfpm.

FEP. See fluorinated-ethylene propylene.

finish. See surface finish.

flange. A protruding rim, edge, rib or collar, as on a wheel or pipe shaft, used to strengthen an object, hold it in place, or attach it to another object.

flange diameter. The diameter of the outer edge of a flange.

fluid. A liquid, gas or any substance that is regarded as existing as a continuum characterized by low resistance to flow and the tendency to assume the shape of its container.

fluorocarbons, or fluorocarbon resins. Thermoplastic resins chemically similar to the polyolefins, with all of the hydrogen atoms replaced with fluorine atoms. They are made from monomers composed only of fluorine and carbon. The main members of the fluorocarbon-resin family are polytetrafluoroethylene (PTFE), fluorinated-ethylene propylene (FEP), and polyhexafluoro-propylene.

fluoroelastomers. Elastomer compounds (such as Du Pont’s Viton®) containing fluorine, to improve corrosion resistance and high-temperature resistance.

fluoroplastics. The ASTM term for plastics based on polymers with monomers containing one or more atoms of fluorine or copolymers of such monomers, the fluorine-containing monomer(s) being in greatest amount by mass.

fluoropolymer. Another term for fluoroplastics.

foot-pound. A unit of torque equal to the work done by a force of one pound acting through a distance of one foot in the direction of the force of one pound acting through a distance of one foot in the direction of the force.

fpm. Feet per minute. A measurement of velocity in terms of the distance travelled in feet over a period one minute.

free height. The measured height of a spring in the unloaded, free state.

Freonº. A registered trademark of Du Pont for their trichloro-fluoromethane CCI³F (Freon 11) blowing agent for foam plastics; dichlorodifluoromethane CCI²F² (Freon 12) aerosol propellant and refrigerant; and other Freon compounds used for various purposes.

friction. A force tangential to the common boundary of two bodies in contact that resists the motion or tendency to motion of one relative to the other.

ft-lbs. See foot-pounds.

gasket. Any of a wide variety of seals or packages used between matched machine parts or around pipe joints to prevent the escape of agas or fluid.

hard chrome plating. A plating process whereby chromium in a sulfuric-acid catalyst bath is deposited onto the surface of metal parts using an electrolytic process. In seal applications, the coating is typically specified per QQC-320B Class 2E for enhancement of surface hardness and wear resistance.

GLOSSARY

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Harness | Lip

hardness. The relative resistance of a metal to denting, scratching, or bending. Hardness of metallic shafts is typically expressed as arelative value from the Rockwell C or Brinell hardness scales.

hardness, Rockwell B scale. A hardness scale for materials of medium hardness such as low and medium-carbon steels in the annealed condition. Also see Rockwell hardness tester.

hardness, Rockwell C scale. A hardness scale for materials harder than Rockwell B-100. Also see Rockwell hardness tester.

hardness, Rockwell 15N scale. A hardness scale for hardened steel, hard alloys, and hard-coated materials where a shallow impression or small area of testing is desired.

hertz. Abbr. Hz. A unit of frequency equal to one cycle per second.

H²S. See hydrogen sulfide.

hydrocarbon. Any of numerous organic compounds, such as benzene and methane, that contain only carbon and hydrogen.

hydrogen sulfide. Symbol H²S. A colorless, flammable, poisonous compound having a characteristic rotten-egg odor, and used as a precipitator, purifier, and reagent. Also see sour gas.

Hz. See hertz.

ID. Inside diameter. A measurement taken from a point on the inner wall surface of a circular object, along a straight line through the center of the object to a point on its opposite inner-wall surface.

inch-ounce. Abbr. in-oz. A unit of work equal to the work done by a force of one ounce acting through a distance of one inch in the direction of the force.

in. oz. Plural in ozs. See inch-ounce.

interference. The dimensional intrusion of one mechanical part into another. See also interference fit, and seal interference.

interference fit. The condition whereby one part slightly oversized is fitted tightly into another. Example, a 1.000 inch pin pressed into a .998 inch hole has an interference fit of .002 inches. A seal installed in a gland usually has an interference fit. Compare clearance fit.

internal face seal. A face seal that handles pressure acting on the inside diameter of the seal.

Kalrez®. A registered trademark of E.I. Du Pont for their corrosion-resistant, high-temperature, perfluorinated elastomer compound.

Kel-F™. A trademark of 3M Corporation for their melt-processable fluoropolymer PCTFE. See Polychlorotrifluoroethylene.

key-way. A slot in a wheel hub or shaft for a key. The key connects the shaft to a rotary-drive mechanism.

kilogram. Abbr. kg. 1. The fundamental unit of mass in the international System, about 2.2046 pounds. 2. The force equal to a kilogram weight; that is, the product of a kilogram mass with the acceleration of gravity.

kilorad. One thousand rads.

leakage. Passage of a fluid medium or other material past a seal.

leakage rate. The rate at which a fluid medium or other material passes a seal.

line-to-line fit. Also called line-fit. An assembly where one part fits into another with a close sliding fit, without significant clearance or interference.

lip. Refers to the rim edge of a seal, especially at the point where sealing contact is formed against the mating surface.

GLOSSARY

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Harness | Lip

hardness. The relative resistance of a metal to denting, scratching, or bending. Hardness of metallic shafts is typically expressed as arelative value from the Rockwell C or Brinell hardness scales.

hardness, Rockwell B scale. A hardness scale for materials of medium hardness such as low and medium-carbon steels in the annealed condition. Also see Rockwell hardness tester.

hardness, Rockwell C scale. A hardness scale for materials harder than Rockwell B-100. Also see Rockwell hardness tester.

hardness, Rockwell 15N scale. A hardness scale for hardened steel, hard alloys, and hard-coated materials where a shallow impression or small area of testing is desired.

hertz. Abbr. Hz. A unit of frequency equal to one cycle per second.

H²S. See hydrogen sulfide.

hydrocarbon. Any of numerous organic compounds, such as benzene and methane, that contain only carbon and hydrogen.

hydrogen sulfide. Symbol H²S. A colorless, flammable, poisonous compound having a characteristic rotten-egg odor, and used as a precipitator, purifier, and reagent. Also see sour gas.

Hz. See hertz.

ID. Inside diameter. A measurement taken from a point on the inner wall surface of a circular object, along a straight line through the center of the object to a point on its opposite inner-wall surface.

inch-ounce. Abbr. in-oz. A unit of work equal to the work done by a force of one ounce acting through a distance of one inch in the direction of the force.

in. oz. Plural in ozs. See inch-ounce.

interference. The dimensional intrusion of one mechanical part into another. See also interference fit, and seal interference.

interference fit. The condition whereby one part slightly oversized is fitted tightly into another. Example, a 1.000 inch pin pressed into a .998 inch hole has an interference fit of .002 inches. A seal installed in a gland usually has an interference fit. Compare clearance fit.

internal face seal. A face seal that handles pressure acting on the inside diameter of the seal.

Kalrez®. A registered trademark of E.I. Du Pont for their corrosion-resistant, high-temperature, perfluorinated elastomer compound.

Kel-F™. A trademark of 3M Corporation for their melt-processable fluoropolymer PCTFE. See Polychlorotrifluoroethylene.

key-way. A slot in a wheel hub or shaft for a key. The key connects the shaft to a rotary-drive mechanism.

kilogram. Abbr. kg. 1. The fundamental unit of mass in the international System, about 2.2046 pounds. 2. The force equal to a kilogram weight; that is, the product of a kilogram mass with the acceleration of gravity.

kilorad. One thousand rads.

leakage. Passage of a fluid medium or other material past a seal.

leakage rate. The rate at which a fluid medium or other material passes a seal.

line-to-line fit. Also called line-fit. An assembly where one part fits into another with a close sliding fit, without significant clearance or interference.

lip. Refers to the rim edge of a seal, especially at the point where sealing contact is formed against the mating surface.

Load | Pressure actuated

load. The overall force to which a structure is subjected in supporting a weight or mass, or in resisting externally applied forces. Also see spring load.

lubricant. Any of various usually oily liquids or solids, such as grease, machine oil, or graphite, that reduce friction, heat, and wear when applied as a surface coating to moving parts.

mating surface. The surface of a hardware component (such as a shaft, bore, etc.) that contacts the seal to prevent leakage. The qualities of the mating surface are important for their influence on seal performance.

media. The fluids or other substances being sealed. Plural or medium.

megarad. One million rads, a unit of radiation dosage.

memory. The tendency of a material to return to its original shape after release of a load that caused a deformation.

metal-encased. Enclosed in a metallic shell. Refers to a seal or lip designs which are surrounded by a metal case that is press-fit into a housing.

meter. Abbr. m. The fundamental unit of length (equivalent to 39.37 inches) in the metric system.

metric. Designating, pertaining to, or using the metric system, a decimal system of weights and measures based on the meter as a unit length and the kilogram as a unit mass.

MIL-G-5514. Mil-G-5514F “Gland Design: Packings, Hydraulic General Requirements For” is the military specification which gives basic design criteria for seal glands in hydraulic equipment. All of the grooves specified are the solid (one-piece) style. The specification for O-ring-seal groove dimensions includes a list of standard sizes designated by dash numbers -006 through -460. The gland diameters vary slightly from standard inch-fractional sizes. Compare inch-fractional.

mks. Meter-kilogram-second. Of relating to, or being a system of units based upon the meter as the unit of length, the kilogram as the unit of mass, and the mean solar second as the unit of time.

mm. Abbreviation for millimeter. A unit of length equal to one thousandth of a meter or 0.0394 inch.

modulus of elasticity. The stress required to produce a given strain depends on the nature of the material under stress. The ratio of stress to strain, or the stress per unit strain, is called an elastic modulus of the material. The larger the elastic modulus, the greater the stress needed for a given strain. Also see high modulus.

molybdenum disulfide. Symbol: MoS² Also molybdic sulfide, molybdenum sulfide. A white, shiny crystalline material used as a lubricant in nylon, fluorocarbons and polystyrene to reduce wear and friction. It also acts as a strength-improving reinforcement.

MPa. Megapascal. One million pascals. See pascal.

newton. The unit of force which when, applied to a body having a mass of one kilogram gives it an acceleration of one meter per second per second.

Pa. See pascal.

pascal. The SI unit of pressure is one pascal, equal to one Newton per square meter. A related unit is one bar, defined as 105 Pa.

precipitation hardening. A process of hardening a metal alloy in which a constituent precipitates from a supersaturated solid solution.Example: Stainless Stell Type 17-7PH.

pressure. The application of continuous force by one body upon another that it is touching; compression.

pressure-actuated. Put into action or motion by means of pressure. Refers to the seal design feature whereby the sealing lips are forced against the mating surface by the action of fluid pressure.

GLOSSARY

Page 20: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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PSI | Stainless steel

psi. Pounds per square inch. A unit of measure for pressure acting on an area.

qc. Quality control.

rad. A unit of energy absorbed from ionizing radiation, equal to 100 ergs per gram of irradiated material.

radial. 1. Radiating from or converging to a common center. 2. Moving or directed along a radius. Refers to a line from the center of a rod, shaft, or other part outwards in the radial direction. Compare axial.

RB. See hardness, Rockwell B scale.

RC. See hardness, Rockwell C scale.

reciprocate. To move back and forth alternately. Reciprocate usually refers to a linear back-and-forth motion, while oscillate refers to arotary back-and-forth motion.

retainer. Any device that holds a mechanical part (such as a seal or a bearing) in a particular place or position.

RMS. Root-mean-square. A measure of surface roughness. The term RMS, while continuing in use, is actually obsolete per ANSI B46 standard on surface texture. The modern term is Rq.

Rockwell hardness test. The Rockwell hardness tester is essentially a machine that measures hardness by determining the depth of penetration of a penetrator into the specimen under certain fixed conditions of test. The penetrator may be either a steel ball or a diamond sphero-conical point. The hardness number is related to the depth of indentation and the number is higher the harder the material.

rod. A slender, straight round bar. A rod is the same as a shaft. However, the term “rod” is typically used to refer to a reciprocating part, while “shaft” is used to refer to a rotary part.

rod seal. A seal mounted in a housing and having a dynamic mating surface against a reciprocating rod.

rotary. Of, pertaining to, causing, or characterized by rotation.

rotation. Motion in which the path of every point in the moving object is a circle or circular arc centered on a specified axis, especially on an internal axis. Example: the rotation of the earth.

rpm. Revolutions per minute. Unit of measure for rotary motion, designating the number of complete revolutions of an object over aperiod of one minute.

rq. Geometric-average roughness, or Root Mean Square (RMS) is the geometric-average height of roughness-component irregularities measured within a sampling length on a mechanical part. It is more sensitive to occasional highs and lows than Ra.

RTV. Room Temperature Vulcanizing. Refers to RTV silicone-gel two-component compounds. One component (a liquid or paste) cures with the addition of a second compound (a curing agent) to a strong, durable, resilient silicone-rubber.

Ryton®. A registered trademark of Phillips Petroleum Company for their PPS organic polymer. See polyphenylene sulfide.

Sour gas. Gas containing hydrogen sulfide, encountered in some oil-well-drilling operations. Usually combined with high temperatures and pressures in deep wells, it has corrosive effects on certain metals, elastomers, and plastics.

SS. Abbreviation for stainless steel.

stainless steel. Abbr. SS. Any of various steels alloyed with sufficient chromium to resist corrosion, oxidation, or rusting associated with exposure of ordinary steel to water and moist air.

GLOSSARY

Page 21: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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PSI | Stainless steel

psi. Pounds per square inch. A unit of measure for pressure acting on an area.

qc. Quality control.

rad. A unit of energy absorbed from ionizing radiation, equal to 100 ergs per gram of irradiated material.

radial. 1. Radiating from or converging to a common center. 2. Moving or directed along a radius. Refers to a line from the center of a rod, shaft, or other part outwards in the radial direction. Compare axial.

RB. See hardness, Rockwell B scale.

RC. See hardness, Rockwell C scale.

reciprocate. To move back and forth alternately. Reciprocate usually refers to a linear back-and-forth motion, while oscillate refers to arotary back-and-forth motion.

retainer. Any device that holds a mechanical part (such as a seal or a bearing) in a particular place or position.

RMS. Root-mean-square. A measure of surface roughness. The term RMS, while continuing in use, is actually obsolete per ANSI B46 standard on surface texture. The modern term is Rq.

Rockwell hardness test. The Rockwell hardness tester is essentially a machine that measures hardness by determining the depth of penetration of a penetrator into the specimen under certain fixed conditions of test. The penetrator may be either a steel ball or a diamond sphero-conical point. The hardness number is related to the depth of indentation and the number is higher the harder the material.

rod. A slender, straight round bar. A rod is the same as a shaft. However, the term “rod” is typically used to refer to a reciprocating part, while “shaft” is used to refer to a rotary part.

rod seal. A seal mounted in a housing and having a dynamic mating surface against a reciprocating rod.

rotary. Of, pertaining to, causing, or characterized by rotation.

rotation. Motion in which the path of every point in the moving object is a circle or circular arc centered on a specified axis, especially on an internal axis. Example: the rotation of the earth.

rpm. Revolutions per minute. Unit of measure for rotary motion, designating the number of complete revolutions of an object over aperiod of one minute.

rq. Geometric-average roughness, or Root Mean Square (RMS) is the geometric-average height of roughness-component irregularities measured within a sampling length on a mechanical part. It is more sensitive to occasional highs and lows than Ra.

RTV. Room Temperature Vulcanizing. Refers to RTV silicone-gel two-component compounds. One component (a liquid or paste) cures with the addition of a second compound (a curing agent) to a strong, durable, resilient silicone-rubber.

Ryton®. A registered trademark of Phillips Petroleum Company for their PPS organic polymer. See polyphenylene sulfide.

Sour gas. Gas containing hydrogen sulfide, encountered in some oil-well-drilling operations. Usually combined with high temperatures and pressures in deep wells, it has corrosive effects on certain metals, elastomers, and plastics.

SS. Abbreviation for stainless steel.

stainless steel. Abbr. SS. Any of various steels alloyed with sufficient chromium to resist corrosion, oxidation, or rusting associated with exposure of ordinary steel to water and moist air.

Temperature range | Viscosity

temperature range. The temperature range of an application includes all operating temperatures from lowest to highest that a seal will be subjected to in actual service. The temperature range of a material or a device includes all temperatures at which the material or device is capable of functioning properly.

tensile. Of or pertaining to tension, the act of stretching or the condition of being stretched.

thin dense chrome. A type of chrome plating (per Mil-C-23422C Class 2) which produces a very thin, dense layer of chrome (.0002 to .0006 inches thick) with a harder, smoother finish and improved fatigue life. It is sometimes preferred as an alternative to conventional hard-chrome plating in seal applications.

tolerance. The permissible deviation from a specified value of a structural dimension. Example: A shaft with a 1.000 +/- .002 inch diameter can measure anywhere from 0.998 to 1.002 inches and be considered within tolerance.

torque. Torque is defined as the movement of a force, a measure of its tendency to produce torsion and rotation about an axis, equal to the vector product of the radius vector from the axis of rotation to the point of application of the force, by the force applied.

torsion. 1. The act of twisting or turning. 2. The condition of being twisted or turned. 3. The stress caused when one end of an object is twisted in one direction and the other end is held motionless or twisted in the opposite direction.

tungsten carbide. An extremely hard coating applied by a thermal-spray-coating process to obtain high wear resistance on moving parts (e.g. rotary shafts) in contact with seals or other mating surfaces.

µin. Microinch(es). A microinch is one millionth of an inch.

µm. Micrometer(s). A micrometer is one millionth of a meter.

undirectional. Operating in one direction only. Refers to seals that handle pressure from one side of the seal only, or applications where the pressure differential is always on the same side.

vacuum. Containing air or gas at reduced pressure, typically less than atmospheric.

viscosity. The property of resistance of flow exhibited within the body of a material.

GLOSSARY

Page 22: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

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Page 24: METAL GASKET MATERIALS Metal Gasket Catalog PRINT.pdfASME B16.20 Gaskets for ASME B16.47 Series A Flanges (MSS SP-44) Class 150 Cla s 3 0 Size Inner Ring S ea li ng E m t Outer Ring

888.692.7114www.gulfrubberco.com