FFKM O-Rings and Seals

TRP Polymer solutions offers a range of perfluoroelastomer (FFKM) rubber materials for a huge variety of industries and applications. We manufacture an array of products in FFKM, including ‘O’ rings, seals and gaskets. Our unique TRPlast range of perfluoroelastomers offers the highest levels of performance where other polymers simply wouldn’t cope.

What is FFKM?

Following the development of fluoroelastomers (FKM) in the 1950s, demand grew for a more chemically resistant polymer with the ability to withstand higher temperatures. Perfluroelastomers (FFKM) were borne out of this necessity in the late 1960s, combining the chemical resistance of PTFE with the flexibility and elasticity of FKM.

Initially manufactured for chemical processes and space programmes, the versatility and durability of perfluoroelastomers quickly saw them rolled out across a much broader range of applications. FFKM is now widely used, particularly in the automotive and aerospace industries, due to its robust and reliable performance.

One important part of quality production is the o-ring moulding process which you can learn more about by watching our video below.

FFKM O-rings

FFKM ‘O’ rings offer exceptional chemical and thermal resistance. They combine the sealing force, resistance and recovery characteristics of a regular elastomer ‘O’ ring with the added chemical resistance of PTFE. The Carbon-Fluorine bonds of perfluoroelastomers, regarded as the strongest single bond in organic chemistry, guarantee the high chemical, thermal and oxidation resistance of our finished FFKM seals. Find out why industries choose elastomer ‘O’-rings.

An increase in fluorine content increases the chemical resistance of hydrocarbons. Perfluoroelastomers contain 72.5% fluorine with a fully fluorinated backbone chain, which is the maximum fluorination possible whilst still retaining the elastomeric properties required for sealing systems. FFKM’s ether group (R-O-R) gives it its elastomeric properties and elasticity, without which it would act much the same as PTFE.

FFKM O-ring specifications

TRP Polymer Solutions has developed a range of perfluoroelastomer materials to ensure our FFKM ‘O’ rings deliver the highest levels of performance and longevity. Here is a full breakdown of our FFKM ‘O’ ring specifications:

  • High density
  • Best in class chemical resistance
  • Manufactured to ISO9001 standards
  • Suitable for explosive decompression
  • Wide temperature range (-40 °C to +330 °C)
  • Self-extinguishing and non-flammable in air
  • Excellent weatherability and ozone resistance
  • Excellent gas and liquid permeation resistance
  • Suitable for CIP, SIP and hygienic applications
  • Specific grades already tested and formulated
  • Raw compounds sourced from approved suppliers
  • Good mechanical properties and sealing performance

FFKM ‘O’-ring applications

Perfluoroelastomer ‘O’ rings are commonly used in the following applications:

  • Chemical processing
  • Oil and gas
  • Aerospace
  • Heavy duty machinery
  • Automotive

Buy FFKM seals from TRP Polymer Solutions

Quality is built into every aspect of the TRPlast philosophy. Our FFKM seals are produced under the strictest process control conditions to ensure reliability of performance. With full traceability from raw materials to finished goods, you can rest assured that you are buying the best quality perfluoroelastomer products when you purchase from TRP Polymer Solutions.

TRPlast perfluoroelastomer is available as International Standard sized ‘O’ rings and custom moulded components. With over 25 years of manufacturing experience, TRP Polymer Solutions is on hand to provide high-quality FFKM seals, no matter what your industry requirements. For more information or advice regarding our FFKM ‘O’ rings and seals, please contact us today on 01432 268899 or sales@trp.co.uk.

Further Reading on FFKM Rubber and FFKM Seals

For more information about FFKM rubber, here are some articles we’ve written on the subject:

The Benefits of FFKM

The Chemistry Behind FFKM Temperature Range


How FFKM O-Rings Are Made

Which Applications Benefit From FFKM Seals

Find out more about a specific product

Who we've worked with