Properties of FFKM O-rings

FFKM O-rings combine the sealing force, resistance and recovery of a regular elastomer O-ring with the added chemical resistance of PTFE.

FFKM O-ring specifications

Our high quality FFKM materials are designed to deliver the highest levels of performance and extend the service life of your FFKM O-rings.

FFKM O-ring applications

FFKM O-rings are used wherever chemical resistance is paramount, including the oil and gas, aerospace and chemical processing industries.

Buying FFKM O-rings & seals

Our innovative FFKM O-rings and seals are produced under the strictest process control conditions to deliver consistently reliable performance.

FFKM Hub

Following the development of fluoroelastomers (FKM) in the 1950s, demand grew for a more chemically resistant polymer with the ability to withstand higher temperatures. Perfluoroelastomers (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 has developed a range of FFKM materials suitable for a huge variety of industries and applications. FFKM 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 FFKM which 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.

In the development of the perfect FFKM chemical composition, a cure site monomer (CSM) is introduced to form a three-dimensional network. Cyano-functional vinyl ethers are the most noteworthy CSM for FFKMs because they can be cured using a variety of curatives, including organic peroxide, resulting in a network with near universal chemical resistance. Using the di-functional curative diaminobisphenol AF produces a benzoxazole crosslink, which results in networks that exhibit excellent thermal stability. Using crosslink theory, TRP Polymer Solutions is able to develop grades of FFKM with wide temperature ranges that are capable of operating in extremes of temperature from -55°C to +330°C. As such, FFKM is an extremely useful material for developing sealing solutions in hazardous applications and industries.

FFKM O-ring specifications

FFKM offers the broadest chemical resistance of any elastomeric sealing material and is a cost-effective sealing solution for the most demanding environments. TRP Polymer Solutions has developed a range of FFKM materials that enable us to manufacture some of the most advanced O-rings available. Our polymer technologists ensure that the selected material is suitable for the chemical processing environment and is thoroughly tested to meet your requirements. Depending on your exact O-ring specifications, we can supply a range of high-performance TRPlast™ Perfluoroelastomer O-ring materials. For instance, our ultra-low temperature O-ring materials provide dynamic sealing in temperatures as low as -55°C. Our FDA compliant food grade rubber O-ring materials are specially formulated for the demands of the food and medical sectors. Then we have our exceptional oil resistant O-rings and Rapid Gas Decompression (RGD) resistant seals for even the severest downhole conditions.

Black O-Rings on desk with water

Key FFKM O-ring specifications

  • Organic and inorganic acids
  • Caustics
  • Ketones
  • Aldehydes
  • Alcohols
  • Fuels
  • Solvents
  • Hydrocarbons
  • Ethylene and propylene oxide
  • High density
  • Wide temperature range (-55°C to +330°C)
  • Self-extinguishing and non-flammable in air
  • Excellent weatherability and ozone resistance
  • Outstanding gas and liquid permeation resistance
  • Raw compounds sourced from quality approved suppliers
  • Good mechanical properties, improving sealing performance
  • Manufactured to ISO9001 standards to ensure high-quality product
  • Suitable for explosive decompression, CIP, SIP and hygienic applications

FFKM O-ring applications

If you’re in the market for a durable sealing solution that needs to perform optimally in demanding application environments, FFKM rubber seals offer an impressive assortment of advantages. TRPlast™ Perfluoroelastomer O-rings offer the dual benefits of excellent chemical resistance and a wide operating temperature of -55°C to +330°C, making them ideally suited to even the harshest of applications. Don’t compromise on quality or performance, make FFKM your O-ring material of choice.

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

Buying FFKM O-rings & seals

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 deliver unbeatable performance and reliability. With full traceability from raw materials through to finished goods, we supply the most advanced FFKM rubber products available. TRPlast™ Perfluoroelastomer can be supplied as International Standard sized O-rings and Custom Moulded Components.

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