Hygienic Usit® Ring

The Hygienic Usit® Ring (bonded seal) is specially developed by Freudenberg Process Seals for use in the food and beverage, pharmaceutical and biotechnology industries. This sets new standards for the process industries.

The Hygienic Usit® Ring is a further evolution of the standard Usit® ring and seals flanged bolt heads and dome nuts, according DIN EN 1665. This design of the Hygienic Usit® Ring in combination with the flanged bolt head or dome nut prevents the medium from penetrating under the bolt head or nut what can cause growth and formation of germs and bacteria. The Hygienic Usit® Ring design, which is tailor-made for hexagon bolts with flanges, ensures that the

sealing ring is cleanly seated on the flange, precluding the formation of air spaces where microorganisms can accumulate.That’s why today’s facilities are predominantly cleaned without disassembly and instead using CIP, WIP and SIP methods.

Therefor is the Hygienic Usit® Ring your best choice for your hygienic solution!

The 70 EPDM 291, a premium compound for the food and beverage and pharmaceutical industries is FDA, EC1935/2004 approved and has been tested and approved for use in pharmaceutical components and facilities according USP class VI (tot 121°C).For the bolts and dome nuts has Freudenberg Process Seals chosen for a

flanged execution according DIN EN 1665 in stainless steel 316L.This flanged bolt and/or flanged dome nut together with the Hygienic Usit® ring forms an extremely easy-to-clean combination, which has already been tested and approved by the Weihenstephan Research Center for Brewing and Food quality using the “EHEDG Cleanability Method”.The Hygienic Usit® ring is with that certified by EHEDG, Type EL-Class I.

NB: only the combination bolt ,nut and Hygienic Usit® ring is conform “EHEDG Cleanability Method”.

Hygienic Usit® Ring

The Hygienic Usit® Ring is a flat stainless steel washer with on the outside diameter a vulcanized EPDM sealingring for static sealing free of dead-spaces.

The advantages: Hygienic sealing Prevents contaminating deposits Prevents the formation of germs and

bacteria Protects your product from external

influences FDA-compliant and USP Class VI-

tested(121°C) No tooling costs; part of a standard program

Certifications and approvals In conformity with FDA In conformity with EU 1935/2004 ADI free (Animal Derived Ingredients) TSE free (Transmissible Spongiforme

Enzephalopathie) USP Class VI, 121°C EHEDG certificated Type EL-Class I 3A Sanitary Standard USP 381

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Hygienic Usit® Ring Stainless steel 316L with 70 EPDM 291

D D1 S Fitting with flanged Bolts Fitting with flanged dome nut Weight ERIKS article

number

Ca. kg

M4 9,7 1 12427929

M5 10,7 1 12452612 - 12452617 12462660 0,001 12427930

M6 13,1 1 12452618 - 12452624 12462661 0,001 12427930

M8 16,9 1 12452625 - 12452632 12462662 0,001 12427932

M10 21,2 1,5 12452633 - 12452640 12462663 0,002 12427933

M12 25,5 1,5 12452641 - 12452647 12462664 0,003 12427934

M16 33,9 1,5 12452648 - 12452653 12462665 0,005 12427935

Dome Nut with flange for Hygienic Usit® ring, stainless steel 316L

D D1 D2 E H H1 SW T ERIKS article number

M5 9,8 11,8 8,71 12 1 8 8 12452660

M6 12,2 14,2 10,95 14 1,1 10 9 12452661

M8 15,8 18 14,26 18 1,2 13 12 12452662

M10 19,6 22,3 17,62 22 1,5 16 15 12452663

M12 23,8 26,6 19,86 27 1,8 18 19 12452664

M16 31,9 35 26,51 30 2,4 24 22 12452665

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Further information: ERIKS Dynamic Sealing Technology T +31 72 514 18 55 E seals@eriks.nl

Bolts with Flange for Hygienic Usit® rings according DIN EN 1665, stainless steel 316L

D L L1 D1 D2 E H1 K SW R ERIKS article number

M5 15 8 9,8 11,8 8,71 1 9 8 0,3 12452612

M5 20 8 9,8 11,8 8,71 1 9 8 0,3 12452613

M5 25 8 9,8 11,8 8,71 1 9 8 0,3 12452614

M5 30 8 9,8 11,8 8,71 1 9 8 0,3 12452615

M5 35 8 9,8 11,8 8,71 1 9 8 0,3 12452616

M5 40 8 9,8 11,8 8,71 1 9 8 0,3 12452617

M6 20 9 12,2 14,2 10,95 1,1 10 10 0,4 12452618

M6 25 9 12,2 14,2 10,95 1,1 10 10 0,4 12452619

M6 30 9 12,2 14,2 10,95 1,1 10 10 0,4 12452620

M6 35 9 12,2 14,2 10,95 1,1 10 10 0,4 12452621

M6 40 9 12,2 14,2 10,95 1,1 10 10 0,4 12452622

M6 45 9 12,2 14,2 10,95 1,1 10 10 0,4 12452623

M6 50 9 15,8 14,2 10,95 1,1 10 10 0,4 12452624

M8 25 12 15,8 18 14,26 1,2 11 13 0,5 12452625

M8 30 12 15,8 18 14,26 1,2 11 13 0,5 12452626

M8 35 12 15,8 18 14,26 1,2 11 13 0,5 12452627

M8 40 12 15,8 18 14,26 1,2 11 13 0,5 12452628

M8 45 12 15,8 18 14,26 1,2 11 13 0,5 12452629

M8 50 12 15,8 18 14,26 1,2 11 13 0,5 12452630

M8 60 12 15,8 18 14,26 1,2 11 13 0,5 12452631

M8 70 12 15,8 18 14,26 1,2 11 13 0,5 12452632

M10 30 15 19,6 22,3 17,62 1,5 13 16 0,6 12452633

M10 35 15 19,6 22,3 17,62 1,5 13 16 0,6 12452634

M10 40 15 19,6 22,3 17,62 1,5 13 16 0,6 12452635

M10 45 15 19,6 22,3 17,62 1,5 13 16 0,6 12452636

M10 50 15 19,6 22,3 17,62 1,5 13 16 0,6 12452637

M10 60 15 19,6 22,3 17,62 1,5 13 16 0,6 12452638

M10 70 15 19,6 22,3 17,62 1,5 13 16 0,6 12452639

M10 80 15 19,6 22,3 17,62 1,5 13 16 0,6 12452640

M12 30 18 23,8 26,6 19,86 1,8 14 18 0,7 12452641

M12 35 18 23,8 26,6 19,86 1,8 14 18 0,7 12452642

M12 40 18 23,8 26,6 19,86 1,8 14 18 0,7 12452643

M12 45 18 23,8 26,6 19,86 1,8 14 18 0,7 12452644

M12 50 18 23,8 26,6 19,86 1,8 14 18 0,7 12452645

M12 60 18 23,8 26,6 19,86 1,8 14 18 0,7 12452646

M12 70 18 23,8 26,6 19,86 1,8 14 18 0,7 12452647

M16 40 22 31,9 35 26,51 2,4 18 24 1 12452648

M16 45 22 31,9 35 26,51 2,4 18 24 1 12452649

M16 50 22 31,9 35 26,51 2,4 18 24 1 12452650

M16 60 22 31,9 35 26,51 2,4 18 24 1 12452651

M16 70 22 31,9 35 26,51 2,4 18 24 1 12452652

M16 80 22 31,9 35 26,51 2,4 18 24 1 12452653

Tightening moment for Hygienic Usit® ring combinations with bolts/nuts

SS 316L

Thread Coefficient of friction Pretension force F Recommendedtightening moment

KN Nm

M4 0,12 1,4 2,5

M5 0,12 2,3 4,0

M6 0,12 3,2 5,6

M8 0,12 5,9 11

M10 0,12 9,2 18

M12 0,12 13,5 29

M16 0,12 25,0 60

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