FEP Encapsulated O-Ring

With an elastomer core and a jacket of Teflon® fluoropolymer, FEP encapsulated O-ring combine the excellent chemical resistance of PTFE with the elastic behavior of an elastomer. The core is either FKM, Silicone or Stainless Steel. The jacket is FEP or PFA.

APPLICATIONS

FEP encapsulated O-ring is a top choice when a standard O-ring has inadequate chemical resistance for an application and or when a solid PTFE O-ring does not have the elasticity for reliable, long term fluid sealing.

Encapsulated O-ring is often recommended where chemical resistance and or hygiene is required.

Typical applications for encapsulated o-ring include:

Flanges
Valve Stems
Pumps
Joints
Turbo Expanders
Cryogenic seals

Materials for encapsulated o-ring include:
- Silicone Core- Lowest Cost, Most Readily Available
- Hollow Silicone Core- Less Force Required to Compress
- FKM Core- Greater Chemical Resistance and Compression Set Resistance
- Steel Spring Core- Cryogenic Sealing Applications
Why consider encapsulated o-ring

Very good resistance to nearly all media (exceptions are alkali metals and some fluorine compounds)

Applications in broad range of temperatures

Superbly suited for use in the food, chemical and pharmaceutical industries

Low contamination

Low permeation

Low coefficient of friction prevents the stick-slip effect

FDA-compliant

Cost-effective, high-performance seal for many critical application areas

FEP Encapsulated O-Ring

Materials for encapsulated o-ring include:

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