FEP Encapsulated O-rings have an elastomeric core either Viton (fluorocarbon) or Silicone that is completely covered with a seamless sheath of FEP fluoropolymer.
They show excellent resistance to a wide range of media and low friction.
They are physiologically safe and can be sterilized.
FEP Encapsulated O-rings are used when a standard elastomeric O-ring has inadequate chemical resistance for a specific application, and a solid PTFE O-ring does not offer sufficient elasticity.
They are used mainly in the chemical, petrochemical, food and pharmaceutical industries, and other sectors where high levels of chemical resistance or hygiene are required.