FEP Encapsulated O Ring
FEP Encapsulated o rings combine the resilience and sealing force of an elastomer with the chemical resistance of PTFE. They consist of an elastomeric core of silicone or FKM with a seamless, thin encapsulation of FEP. The required elasticity, pretension and dimensional stability is provided by the elastomer core, while the seamless FEP encapsulation ensures reliable sealing and high resistance to aggressive media. FEP Encapsulated o rings are primarily used in low pressure static or slow moving dynamic applications. This seal type is recommended for non-abrasive contact surfaces and non-abrasive media only. Preconditions for the use of FEP Encapsulated o rings are low press-in assembly forces and limited o ring elongation.