AGS / Flexitallic Products

AGS GROUP INC

All Spiral Wound Gaskets Are Not Created Equal

► All ”flexitallics” are not Genuine Flexitallic Spiral Wound Gaskets

► Flexitallic invented the spiral wound gasket

► Introduced every major advancement in spiral wound gasket technology

► Over 7000 calls per year into our engineering department

► Sound technical support from initial design to startup and troubleshooting

► Seminars, training, gasket surveys, inventory consolidation

Unless your gaskets say FLEXITALLIC they are not Genuine Flexitallic Spiral Wound Gaskets

Are Not

► Well established (over 92 years)► Available in a wide range and

combination of materials► Custom Engineered► Variable Density► Inherent Resiliency…..well suited

for cyclical pressure / temperatureapplications

► Blow out resistant► Cryogenics to extremely high temperature► Vacuum to high pressure► Ease of flange clean-up

Spiral Wound Gasket Features

NEW ASME B16.20 CODE

As a reseller of spiral wound gaskets with graphite filler, you will need to conform to the new language either by supplying spirals with inner rings (Style CGI) or by obtaining confirmation from your customer that they want non inner ring gaskets (Style CG). Should a customer simply ask for a spiral that conforms to ASME B16.20 manufactured with graphite, you will need to supply an inner ring gasket or be subjected to possible returns or even worse defend your action in the event of a failure. By not addressing this issue, supplying “NON SPEC” ASME B16.20 gaskets could become a real issue. By discussing the new code requirements with your customers now, you can avoid getting a black eye for not meeting code specifications.

Soft filler material flows into surface imperfections

Metal wraps provide resilience and stability

Outer ring acts as a centering device, a compression stop, and an anti-blowout device

Normally used on RaisedFace or Flat Face flanges

Outer Ring► Centering Device► Compression Stop► Blowout Resistance

Spirals – Style CG

Normally used on Raised Faceor Flat Face Flanges

Inner Ring

► Additional Compression Stop► Additional Blowout Resistance► Prevents Buckling► Prevents Build Up of Process Fluid► Minimizes Erosion and Turbulence► Shields the Gasket

Per ASME B16.20 inner rings are mandatory in thefollowing applications: • Pressure Class 900, NPS 24 and larger• Pressure Class 1500, NPS 12 and larger• Pressure Class 2500, NPS 4 and larger• All PTFE filled spiral wound gaskets

ASME B16.20 also recommends inner rings in applications where inward buckling has been experienced.

Spirals – Style CGI

METAL WINDING STRIPAS STANDARD

Stainless Steeltype 304316L

OTHERSStainless Steel

type 304L type 321309 347310 430316Ti 17-7PH

Alloy 20Monel®Titanium®Nickel® 200Inconel® 600

625X-750

Hastelloy® B2C276

Incoloy® 800825

Duplex

Zirconium®Tantalum®CopperPhos-BronzeCarbon Steel

GUIDE RING MATERIALAS STANDARD

Carbon SteelOTHERS

Stainless Steeltype 304 type 310304L 321316 347316L 410316Ti

Inconel® 600625

Monel®Titanium®NickelIncoloy 800Alloy 20

Incoloy® 825Hastelloy® B-2

C276

FILLER MATERIALAS STANDARD

Non Asbestos Flexite Super®OTHERS

Flexicarb®Asbestos Paper-not availablePTFECeramicThermiculite

AvailableGasket

Materials

Nominal Pipe Size and Pressure Class. Not shown when gasket is manufactured to special dimensions.

Outer Ring Material when other than Carbon Steel.

Inner Ring Material when other than Carbon Steel.

Winding Metal and Filler Material. Stamping 316L

Manufactured to ASME B16.20 latest edition or applicable dimensional and quality specifications.

Flexitallic Spiral Wound Gaskets -Stamping & Color Codes

Spirals – Filler Color Code

Material Max Temp Color

Flexicarb®/Grafoil® 500 C

Flexite® Super 250 C

PTFE/NS PTFE 250 C

Ceramic 2300 F

Mica 2000 F

Thermiculite 900 C

*Suitable to 6000 F in a non-oxidizing atmosphere

Forces Acting On A Gasket

InternalPressure

HydrostaticEnd Thrust

HydrostaticEnd Thrust

Clamping Force

Clamping Force

Relaxation

Compressed Fiber Sheet - Additional Products

Material Description Max Temp* Service & Application

SF 1630 Cellulose/Aramid NBR/NR 356 F ‘Cutter Grade’ - for hydrotest and other non-critical

applications

AF 2100 Glass Fiber / NBR 887 FSuitable for steam, gases, oils, general chemicals. Excellent covering for high temp transfer rollers of annealing furnaces at steel mills.

SF 2420 Aramid / SBR 752 F Suitable for general service where SBR binder is preferred

SF 3300 Aramid / Glass/NBR 824 F Premium grade, high strength, high surface stress, for general service

SF 3500 Aramid / Glass/NBR 824 FHigh level of aramid fiber for increased strength in narrow cross sections. Developed specifically for split casing pumps

SF 5000 Carbon Fiber / Aramid / NBR 824 F Especially suitable for sealing caustic liquors and other

strong alkalis

*Max temp is at minimum thickness

► Advantages− Low Stress to Seal− Conformable Faces− Relatively Low Initial Price

► Disadvantages− Required Load Can Still Be High− Limited Load Bearing Capability− Limited Chemical Compatibility− Limited Recovery− Limited Pressure and Temperature Range− Removal/Cleanup Can Be Difficult− Possibility of Blowout

Compressed Fiber Sheet

Flexicarb® Flexible Graphite

► Advantages− Highly chemical resistant− Conformable surfaces− Excellent tightness− Creep resistant

► Major Disadvantages− Extremely fragile unless

supported− Cosmetic blemishes− Possibility of blowout− Oxidation

Flexicarb® Flexible Graphite

► A sealing material based on a blend of thermally and chemically exfoliated vermiculite with a very low percentage of binder

► Vermiculite is a naturally occurring plate silicate mineral that is in the mica family

Thermiculite™

► As a replacement for graphite, ceramic, mica, Milam or asbestos gaskets► Exhaust gas, e.g. internal combustion engines, turbo-expanders, etc.► Nitric acid, ammonium nitrate fertilizers, ammonia production, fertilizer plants► Catalyst regeneration► Heat treating ovens► Blast furnaces; molten metal handling; metal refining► Sulfur recovery plants; sulfur dioxide and trioxide► Nox re-burning at power plants► Waste incineration► Pulp & paper digester heads► High temperature steam► Gas turbines► Photographic film manufacturing► Oxidizing salt baths► Heat shields

Thermiculite™

Applications

► Chemically and thermally inert► Suitable to 1600 F and higher► Unaffected by oxidation► Totally non-toxic► No respirable fibers► Excellent sealing characteristics► Excellent recovery characteristics► Excellent temperature stability► Available in sheets, cut gaskets, spiral wound gaskets, as a facing on

Flexpros, and as a paste

Thermiculite™

The Premier High Temperature Sealing Material

► When an RTJ is bolted up in a flange, a very high surface stress is generated between the RTJ gasket and the flange groove

► This stress is sufficient to cause plastic deformation – permanent deformation of the metal, so RTJ gaskets should not be reused

► As metals deform they work harden – hardness increases

► The RTJ material must be softer than the flange groove to avoid deformation of the flange groove

► The difference in initial hardness should be 15-20 Brinnell

RTJ Gaskets

Final Brinell HardnessSOFT IRON * 90 INCONEL 600 200LOW CARBON * 120 INCONEL 625 200F5 * 130 INCONEL 718 200304 * 160 INCOOYL 800 200316 * 160 INCOOYL 825 150321 160 HASTELLOY B2 200347 * 160 ALLOY C276 20017/4 PH 180410 170 DUPLEX 2205 (F51) 200ALLOY 200 175ALLOY 400 200

RTJ Gaskets

*Standard materials covered by ASME B16.20 and API 6A.

Gasket PlasticallyDeformed ThroughBolt LoadPressure ClassesAPI 6A - Up to 15000 psiASME - Class 150 to 2500

RTJ Gaskets

Style R Octagonal and Oval

Sigma Products 2008

• Developed by Flexitallic as an equivalent alternative to other filled PTFE sheets

• Bi-axial orientation provides isotropic properties (equal properties in all directions)

• All ingredients comply with FDA requirements

• All grades can be cleaned for oxygen service

• Chemical Resistance pH 0-14

Sigma is a bi-axially orientated, filled PTFE based sheet material

Sigma™

Scanning electron microscope pictureat 1200x magnification

Fully Structured PTFE - Excellent Chemical Resistance- High seal maintenance- High added value potential- Ease of use

PTFE Sheet Types

Product FluorosealFiber PTFE

Typical Ind/Application Food, Pharmaceutical, Chemical,Petroleum, Water, Gas,Agricultural, Marine

Feature Benefit

Unlimited shelf life/few sizes satisfy all requirements Economical

Adhesive strip Accurate positioning on vertical, overhead or awkward locations

Pure PTFE Non-contaminating

Soft Flexible Easily fits irregular shape; Seals damaged/worn flanges

Supplied in strip form No delay waiting for conventional gaskets to be cut; No waste; Will fit large flange diameters

Bolt UpProcedure

Lubricate bolts and the bottom of the nuts with a Petroleum/Graphite mix. You can loose

Check gasket for correct size and damage. Do not put anything on the face of the gasket.Check flange for damage, flatness, and parallelism.Check flange surface finish - 125 to 250 RMS, AARH.Check bolts to see if they are B-7 or better and have no damaged threads. Evaluate washer use.

50% of the torque from friction.Use a cross bolting pattern.Use chart for torque requirements.Make a minimum of three passes with not more than 33% of the load per pass.Check for flange rotation (bending).High temperature applications may require re-torque in 24 hours.Consider Bolt Tensioning Equipment or Ultra Sonic Gauges (Stress Mike).

Hammer WrenchPneumatics Air WrenchHydraulic Torque WrenchHydraulic TensionerUltra Sonics

1.2.3.4.

5.

6.7.8.9.

10.11.

Always Select The CorrectGrade of Bolt Material

B7 - Up to 752°F

B16 - Up to 968°F

B17B - Up to 1202°F

B8 - Up to 977°F (Low Yield)

B80A - Up to 1382°F

Remember!!Use Bolt Lubrication

1/4 20 0.185 0.027 4 810 6 1215 8 16205/16 18 0.24 0.045 8 1350 12 2025 16 27003/8 16 0.294 0.068 12 2040 18 3060 24 40807/16 14 0.345 0.093 20 2790 30 4185 40 55801/2 13 0.4 0.126 30 3780 45 5670 60 75609/16 12 0.454 0.162 45 4860 68 7290 90 9720

5/8 11 0.507 0.202 60 6060 90 9090 120 12120

3/4 10 0.62 0.302 100 9060 150 13590 200 18120

7/8 9 0.731 0.419 160 12570 240 18855 320 25140

1 8 0.838 0.551 245 16530 368 24795 490 33060

NOMINALDIAMETEROF BOLT

INCHES

NUMBEROF

THREADS

(PER INCH)

DIAMETERAT ROOT

OF THREAD

(INCHES)

AREAAT ROOT

OF THREAD

(SQ. INCH)TORQUEFT/LBS

COMPRESSIONLBS.

TORQUEFT/LBS

TORQUEFT/LBS

COMPRESSIONLBS.

30,000 PSI 45,000 PSI 60,000 PSICOMPRESSION

LBS.

STRESS

Torque Data For Use With Alloy Steel Stud BoltsLoad In Pounds On Stud Bolts When Torque Loads Are Applied