Seals Eastern, Inc.

Fluorelastomer (FKM) Seals, Gaskets, and O-rings

designed and manufactured in the USA

Tel: 732-747-9200

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Our portfolio of field tested fluorelastomers (also known as fluoro-rubber) can be utilized in seals, o-rings, gaskets, packings and other applications where thermal stability and chemical resitance are required. If your seals exhibit thermal or chemical degradation, we can help you by analyzing your failures and recommending the appropriate brand and grade of fluoroelastomer to solve your problem. Let us be your trusted engineer: we have been solving sealing problems with fluorelastomers since 1960.

Seals Eastern has experience formulating and molding most of the commercially available grades of fluorelastomers, including most grades of VitonTM, DyneonTM, FluorelTM, TechnoflonTM, and other leading brands. Viton includes Viton AHV, Viton ETP, Viton TBR, Viton B, and other Viton polymers As a general rule, fluoroelastomers provide exceptional resistance to heat, oils, and chemicals by substituting the hydrogen atoms in the polymer with Fluorine atoms. As a result, our fluoro-rubber formulations deliver a broad range of chemical resistance, continuous service temperatures of 400F, and low temperature capabilities down to -35F. All of our custom formulated rubber is mixed and molded in our Red Bank, NJ factory using systems certified to ISO-9001 and ISO-14001.

D1418 Class Duro Compound Description
FKM    
(Type 1)
BPAF Cure
605722A Excellent mechanical properties. Good extrusion resistance. Chemical and heat resistant.
  757040 Chemical and heat resistant.
  907042 Chemical and heat resistant.
     
(Type 2)
BPAF Cure
605722 Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
  755723 Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
  855724 Maximum retention of elastic properties. Excellent resistance to fluids and heat aging.
(Type 2)
Peroxide Cure
757235 Ultra-low compression set; Excellent resistance to fluids and heat aging.
  927248 Ultra-low compression set; RGD / ED resistant FKM rubber: ISO-23936-2 certified; Extrusion resistant; Excellent resistance to fluids and heat.
      
(Type 3)
Viton GFLT
755794 Low temperature Service. Excellent resistance to fluids and heat aging.
  905795 Low temperature Service. Excellent resistance to fluids and heat aging.
FEPM    
ETP-600S 807265D VitonTM ExtremeTM - ETP. PMVE/TFE/E composition. Excellent base resistance. Resistant to aromatic HCs.
  857265 Viton Extreme - ETP. PMVE/TFE/E composition. Excellent base resistance. Resistant to aromatic HCs.
AFLAS xxAflas Rubber Visit our selection of premium quality Aflas compounds

Most fluoroelastomers are categorized under the ASTM D1418 designation of FKM (the DIN/ISO counterpart to this designation is FPM). This class of elastomer is further categorized by types. 

FEPM class polymers offer the chemical resistance and thermal stability of of FKM class flouroelastomers and additionally offer excellent base resistance since there is no vinylidene fluoride in the composition.

Do not be fooled by ultra-low cost fluoroelastomer o-rings since they often contain reground material and inferior fluorocarbon copolymers. Cheap imports will deliver inferior performance. Seals Eastern guarantees its fluorelastomer seals are made using 100% virgin fluoro-polymers from brand name producers and are post-cured in accordance with the manufacturers' recommendation.

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