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Viton FKM FPM (Fluorocarbon)

  • CBD.SEALS
  • Viton FKM FPM (Fluorocarbon)
    • High-performance / high-temperature/ chemical-resistant Viton FKM FPM
    What is the FKM Rubber ?

    FKM rubber, known as Fluorocarbon Rubber, is a high-performance synthetic rubber that belongs to the category of Fluoro Rubber.FKM rubber is a copolymerization of fluorine-containing monomers (e.g., vinylidene fluoride, hexafluoropropylene, etc.), which provides excellent chemical, heat, and oil resistance.

    Chemical structure and synthesis

    Monomer: The main monomers of FKM rubber include fluorine-containing monomers such as Vinylidene Fluoride (VDF) and Hexafluoropropylene (HFP).

    Polymerization method: FKM rubber is usually synthesized by emulsion polymerization, solution polymerization or suspension polymerization. During the polymerization process, monomers are polymerized in a suitable solvent or dispersion medium to form a high molecular weight polymer.

    Polymerization initiators: Commonly used polymerization initiators include peroxides, azo compounds, etc

    • Specialty Resistances
    • Vacuum
    • Most Acids / Chemicals
    • Halogenated Hydrocarbons
    • Di-Ester Lubricants
    • Petroleum Oils / Fuels
    • Silicone Oils / Greases
    • Limitations
    • Not resistant to Ketones (MEK)
    • Not resistant to Auto / Aircraft Brake Fluids
    • Not resistant to Amines (Ammonia)
    • Not resistant to Acetone, Skydrol, Ethyl Acetate
    • Not resistant to Hot Water and Steam (except specialty grades)
    • Not resistant to Low Molecular Esters and Ethers
    • Mechanical Properties
    • Good Wear Resistance
    • Excellent Comp. Set Resistance
    • Moderate Short-Term Resilience
    • Excellent Permeation Resistance

    Our CBD Seals FKM Compounds information：

    Chemical resistance: FKM rubber has good chemical resistance and can resist most acids, alkalis, solvents and oxidizers, but not as extreme as FFKM rubber.

    Heat resistance: FKM rubber maintains good performance at high temperatures (usually up to 200°C or more).

    Oil and fuel resistance: FKM rubber has excellent resistance to petroleum-based oils, lubricants and fuels.

    Weather resistance: FKM rubber has good UV and ozone resistance.

    Mechanical properties: FKM rubber has good tensile strength, tear strength and abrasion resistance.

    Electrical insulation: FKM rubber has good electrical insulation properties and is suitable for use as seals in the electrical and electronics industries.

    Processing and vulcanization

    Processing method: FKM rubber can be processed by traditional rubber processing methods such as extrusion, calendering, injection molding and molding. Due to its high viscosity and high melting point, processing is difficult and requires special equipment and technology.

    Vulcanization: Vulcanization of FKM rubber usually uses peroxide as the vulcanizing agent. During the vulcanization process, the free radicals generated by the decomposition of peroxides react with the rubber molecular chains to form a cross-linked network.

    Areas of application

    Automotive industry: for the manufacture of oil- and heat-resistant automotive seals, hoses, belts, etc.

    Petrochemical industry: used to manufacture chemical-resistant seals, gaskets, etc.

    Aerospace: used to manufacture high temperature and chemical resistant aerospace seals.

    Semiconductor industry: for the manufacture of chemical-resistant, high-temperature-resistant seals for semiconductor manufacturing equipment.

    Medical industry: for the manufacture of chemical-resistant, non-toxic medical equipment seals.

    Sustainability

    Recycling: FKM rubber can be recycled and reused to reduce the impact on the environment. Some advanced recycling technologies can convert waste FKM rubber into new rubber products or other useful materials.

    Fluorocarbon (FKM) rubber is a high-performance synthetic rubber known for its excellent chemical resistance, high temperature resistance, weatherability, mechanical properties, electrical insulation, airtightness and biological inertness. It is widely used in industries that require resistance to extreme chemical and temperature conditions, such as automotive, aerospace and chemical. Its unique properties make it the material of choice for many critical applications, despite its higher cost and difficult processing.

    The advantages of fluoroelastomer (FKM) over nitrile rubber (NBR) are primarily based on superior chemical resistance, high temperature resistance, weatherability, abrasion resistance, air tightness and electrical insulation. These properties make fluoroelastomers the preferred choice for applications that require resistance to extreme chemical and temperature conditions, although they are more costly and difficult to process. Nitrile rubber, on the other hand, has advantages in terms of cost and resistance to certain oils.

    The advantages of fluoroelastomer (FKM) over ethylene propylene diene diene monomer (EPDM) are primarily due to its superior chemical, temperature and oil resistance. FKM is able to remain stable in extreme chemical environments and high temperatures, while EPDM is relatively weak in these areas. In addition, fluoroelastomers have better weathering and mechanical properties than EPDM; however, EPDM performs better in terms of water, ozone, and low-temperature resistance, and is typically less costly.

    Fluorocarbon (FKM) has advantages over silicone mainly in terms of greater chemical, oil and high temperature resistance. FKMs are able to remain stable under extreme chemicals, oils and high temperatures, whereas silicone is relatively weak in these areas. In addition, the mechanical strength and abrasion resistance of fluoroelastomers are superior to silicone. However, silicone performs better in terms of low-temperature resistance, electrical insulation and biocompatibility, and has better breathability and flexibility.