Silicone elastomer · FEP (fluorinated ethylene propylene)
Silicone elastomer core encapsulated in a seamless FEP fluoropolymer jacket. Combines silicone's flexibility and recovery with FEP's near-universal chemical resistance and non-stick surface. Identifiable by the red silicone core visible at the bonded seam.
| Core material | Silicone elastomer |
| Jacket / encapsulant | FEP (fluorinated ethylene propylene) |
| Service temperature | −60 to +205 °C |
| Hardness | — |
| Standard sizes | Metric and imperial (AS568) on request — bespoke sizes available |
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−200 to +260 °C · 302 stainless steel spring
−200 to +260 °C · Solid PTFE (no core)
−30 to +100 °C · NBR (acrylonitrile-butadiene)
−20 to +200 °C · FKM (fluoroelastomer)
−40 to +150 °C · EPDM (ethylene-propylene-diene)
−60 to +200 °C · VMQ (silicone)
−40 to +150 °C · HNBR (hydrogenated nitrile)
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