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SVKS Seal, with over 10 years experience, is one of the leading solvent resistant ptfe or teflon encapsulated o rings with viton or silicon elastomer core manufacturers and suppliers in China. And we also offer the customized service catering to your special requirement. Please be free to buy the rubber products with competitive price from us.
PTFE or Teflon-coated O-rings combine the resilience and sealing force of an elastomer with the chemical resistance of Teflon.
Elastomer or Rubber O-rings often suffer from high friction and limited resistance to aggressive chemicals and gas permeation, whereas Teflon O-rings are rigid with no effective memory and high compression set.
By coating a core of Silicon or Viton with a relatively thin encapsulation of Teflon, an O-ring is produced which has maximum sealing capability:
* Solvent resistant
* Chemically inert (except for attack by alkaline metals, fluorine and some halogenated compounds at high temperatures)
* Very low permeability to gases
* They have a memory near to that of rubber O-rings
* The Teflon coatings provide an excellent abrasion resistance
