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Seals Eastern, Inc.
Viton ® Seals, gaskets, and o-rings
For high temperature and 
chemically aggressive applications.
 


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RED BANK, NJ 07701-0520 USA
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Viton includes Viton AHV, Viton ETP, Viton TBR, Viton B, and other Viton polymers formulated by Seals Eastern. Seals Eastern molds Viton ® rubber including Viton A, Viton B, Viton GFLT, and Viton ETP (Extreme) into o-rings, gaskets, and other mission critical seals. Generally speaking, products molded using Genuine Viton elastomers provide exceptional resistance to heat, oils, and chemicals.

Seals Easterns formulated Viton ® elastomers can be utilized in seals, o-rings, gaskets, packings and other applications where thermal stability and chemical resitance is required. Seals Eastern has solved sealing problems using Viton ® polymers since 1960.
D1418 Class Duro Compound Description
FKM    
(Type 1)
Viton A
605722AExcellent mechanical properties. Good extrusion resistance. Chemical and heat resistant.
  655753Chemical and heat resistant.
  757040Chemical and heat resistant.
  857042UExcellent mechanical properties. Good extrusion resistance. Chemical and heat resistant.
  907042Chemical and heat resistant.
     
(Type 2)
Viton B
605722Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
  755723Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
  855724Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
  955725Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
      
(Type 3)
Viton GFLT
705787 Exceptional resistance to oils, organic fluids, steam, inorganic acids and other aqueous media. 69% Fluorine terpolymer. 
  755794Low temperature Service. Excellent resistance to fluids and heat aging.
  805788 Exceptional resistance to oils, organic fluids, steam, inorganic acids and other aqueous media.
  905795Low temperature Service. Excellent resistance to fluids and heat aging.
FEPM    
Viton ETP 807265DViton Extreme - ETP. PMVE/TFE/E composition. Excellent base resistance. Resistant to aromatic HC's.
  857265Viton Extreme - ETP. PMVE/TFE/E composition. Excellent base resistance. Resistant to aromatic HC's.

NOTE: Viton GF has been discontinued by DuPont.

Most Viton ® elastomers are categorized under the ASTM D1418 designation of FKM. This class of elastomer is further categorized by types. 

  • Type-1 FKM:  a copolymer of hexafluoropropylene (HFP) and vinylidene fluoride (VDF or VF2). A Type-1 Viton is generally 66% fluorine by content.
  • Type-2 FKM:  a terpolymer of tetrafluoroethylene (TFE), vinylidene fluoride (VDF), and hexafluoropropylene (HFP). A Type-2 Viton is generally 68% fluorine by content.
  • Type-3 FKM:  a terpolymer of TFE, Fluorinated vinyl ether and VDF.
  • Type-4 FKM:  a terpolymer of TFE, Propylene, and VDF.
  • Type-5 FKM:  a pentapolymer of TFE, HFP, VDF, Ethylene, and a fluorinated vinyl ether.
On account of these molecular compositions, Viton ® based elastomer formulations deliver a broad range of chemical resistance, continuous service temperatures of 400F, and low temperature capabilities down to -35F.

Viton-ETP ®, also referred to as Extreme, is an FEPM class material and additionally offers excellent base resistance since there is no vinylidene fluoride in the composition. 

Do not be fooled by counterfeit "Viton" o-rings that often contain reground material and cheap fluorocarbon copolymers. Cheap imports will deliver inferior performance. Seals Eastern guarantees its Genuine Viton ® seals are made using 100% virgin Viton ® polymers and are post-cured in accordance with DuPont recommendation. 

SEALS EASTERN
MOLDING SUCCESS FOR 50 YEARS.

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FastDash ™ is a trademark of Seals Eastern, Inc.; OringOnline ® is a registered trademark of Seals Eastern, Inc.; 7182 ™ is a trademark of Seals Eastern, Inc.; AFLAS ® is a registered trademark of Asahi Glass Co., Ltd.; Viton ® is a registered trademark of Dupont Performance Elastomers, LLC.