FFKM O-Rings and Rubber Seals

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

Initially manufactured for chemical processes and space programmes, the versatility and durability of FFKM quickly saw it rolled out across a much wider range of applications. It is now widely used, particularly in the automotive and aerospace industries, to reduce downtime across many industry processes.

TRP Polymer solutions have developed a range of FFKM materials suitable for a huge variety of industries and applications. O-rings, seals and gaskets are the most common products that we manufacture from FFKM. In pursuit of excellence, we developed our unique TRPlast range of Perfluoroelastomers (FFKM). Put simply, this range of perfluroelastomers offers the highest levels of performance and can often be used in applications where other polymers simply wouldn’t cope.

Properties of 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 FFKM, regarded as the strongest single bond in organic chemistry, guarantee the high chemical, thermal and oxidation resistance of our finished O-ring products.

An increase in fluorine content increases the chemical resistance of hydrocarbons. As such, FFKM contains 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 FFKM would act much the same as PTFE.

FFKM O-ring specifications

TRP Polymer Solutions have developed a range of FFKM materials offering the highest levels of performance, which in turn extends the service life of all our FFKM O-rings.

Here is a full breakdown of our FFKM O-ring material specifications:

  • Wide temperature range (-40OC – 330OC)
  • Best in class chemical resistance, including but not limited to the following chemicals:
    • Organic and inorganic acids
    • Caustics
    • Ketones
    • Aldehydes
    • Alcohols
    • Fuels
    • Solvents
    • Hydrocarbons
    • Ethylene and propylene oxide
  • Excellent gas and liquid permeation resistance
  • Excellent weather ability and ozone resistance
  • Self-extinguishing and non-flammable in air
  • High density
  • Good mechanical properties, improving sealing performance
  • Suitable for explosive decompression, CIP, SIP and hygienic applications, with specific grades already tested and formulated
  • Raw compounds are sourced from quality approved suppliers for product consistency

Manufactured to ISO9001 standards to ensure a high-quality product

FFKM O-ring Applications

FFKM O-rings are commonly used in the following applications:

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

Buying FFKM Rubber Seals from TRP Polymer Solutions

Quality is built into every aspect of the TRPlast philosophy. As such, our FFKM O-rings and 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 FFKM rubber products. TRPlast Perfluoroelastomer is available as International Standard sized O-rings and Custom Moulded Components.

With over 25 years’ manufacturing experience, TRP Polymer Solutions are on hand to provide high-quality FFKM seals, no matter what your industry requirements. For more information or advice on our FFKM elastomer products, please contact us today by calling 01432 268899.

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