CHEM-RING Tefllon® Encapsulated O-Rings
CHEM-RING Tefllon Encapsulated O-Rings combine the resilience and sealing force of an elastomer with the chemical resistance of Tefllon®. They consist of an elastomeric core of Silicon or Viton® with a relatively thin, molded encapsulation of Tefllon® FEP or PFA polymer. This produces an elastomeric PTFE seal with maximum sealing capability. Elastomeric, rubber 'O' Rings suffer from high friction and limited resistance to aggressive chemicals and gas permeation. Solid Tefllon® 'O' Rings are rigid with no effective memory and high compression set.
FEP Encapsulated 'O' Rings are solvent resistant and chemically inert (except for attack by alkaline metals, fluorine and some halogenated compounds at high temperatures) yet have an elastomeric memory near that of rubber 'O' rings. FEP polymer, also, has an extremelylow coefficient of friction (.1 to .2) and very low permeability to gases, making CHEM-RINGS a virtually universal seal for use in hostile environments.
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