PFA / Silicone Encapsulated O-rings | Plastik Solutions

Overview

Silicone-cored o-ring with a PFA jacket. PFA offers slightly better mechanical properties and a higher service temperature than FEP, especially under continuous heat. Recommended when service temperatures approach 200 °C and above.

Specifications

Core material	Silicone elastomer
Jacket / encapsulant	PFA (perfluoroalkoxy)
Service temperature	−60 to +260 °C
Hardness	—
Standard sizes	Metric and imperial (AS568) on request — bespoke sizes available

Typical Applications

High-temperature pharmaceutical and food applications
Steam sterilization above 180 °C
Process equipment with sustained elevated temperatures
Where FEP encapsulation is at its temperature limit
Static seals in heated reactor and dryer flanges

All O-ring Materials

Browse other o-ring materials in our range.

FEP / Silicone Encapsulated O-rings

−60 to +205 °C · Silicone elastomer

FEP / Viton Encapsulated O-rings

−20 to +205 °C · FKM (Viton) fluoroelastomer

PFA / Viton Encapsulated O-rings

−20 to +260 °C · FKM (Viton) fluoroelastomer

Cryogenic O-rings (Spring-Energized)

−200 to +260 °C · 302 stainless steel spring

PTFE O-rings (Solid)

−200 to +260 °C · Solid PTFE (no core)

Nitrile (NBR) O-rings

−30 to +100 °C · NBR (acrylonitrile-butadiene)

FKM (Viton) O-rings

−20 to +200 °C · FKM (fluoroelastomer)

EPDM O-rings

−40 to +150 °C · EPDM (ethylene-propylene-diene)

Red Silicone O-rings

−60 to +200 °C · VMQ (silicone)

HNBR O-rings

−40 to +150 °C · HNBR (hydrogenated nitrile)

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