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Encapsulated O-Rings & Seals | Silicone and Viton® | Polymax UK

FEP Encapsulated O-Rings


An encapsulated O-ring comprises an elastomer energising core, which has a seamless jacket made from fluoropolymer. The elastomeric core may be Fluorocarbon (Viton/FPM or Silicone). The jacket is made from Teflon® F.E.P. (Fluorinated - ethylemnbmbnne - propylene).

Temperature Range

  • FEP Viton temperature range -20°C to 204°C (Intermittant)
  • FEP Silicone temperature range -60°C to 204°C (Intermittant)

Recommended temperature range -30°C to +170°C

Why Encapsulated?

There are certain applications which prohibit the use of conventional rubber O-ring Seals. The use of hostile chemicals or extreme temperature (both high and low) during various processes can make effective sealing very difficult.

Recommended for use in

  • Chemical Processing and Production
  • Oil Extraction (on shore and off shore)
  • Petrochemical Refining
  • Pharmaceutical Production
  • Food and Drink Processing
  • Paint and Die Manufacturing
  • Cosmetics and Perfumery
  • Automotive Components
  • Aerospace Engineering



Call our dedicated O-ring hotline to speak with one of our experts about your requirements +44 (0)14204 72000