Vulcan Chem-Ring Teflon Encapsulated Seals

1 of 1

Vulcan Chem-Ring Seals combine the resilience and sealing force of an elastomer with the chemical resistance of Teflon. They consist of an elastomeric core of Silicone or Vitonฎ with a relatively thin, moulded encapsulation of Teflon 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 Teflon "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 extremely low coefficient of friction (0.1 to 0.2) and very low permeability to gases, making Chem-Rings a virtually universal seal for use in hostile environments.

Vulcan Chem-Ring Teflon Encapsulated Seals