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Viton

Viton is a brand of synthetic Rubber and Fluoropolymer Elastomer commonly used in O-rings and other moulded or extruded goods. The name is a registered trademark of DuPont Performance Elastomers L.L.C..

Viton Fluoroelastomers are categorized under the ASTM D1418 & ISO 1629 designation of FKM. This class of Elastomers is a family comprising copolymers of hexafluoropropylene (HFP) and vinylidene fluoride (VDF or VF2), terpolymers of tetrafluoroethylene (TFE), vinylidene fluoride (VDF) and hexafluoropropylene (HFP) as well as perfluoromethylvinylether (PMVE) containing specialties. The fluorine content of the most common Viton grades varies between 66 and 70%.


Four families of Viton Polymers are available:
  • A(Dipolymers of VF2/HFP): General purpose sealing. Automotive, Aerospace fuels & lubricants
  • B(Terpolymers of VF2/HFP/TFE): Chemical Process plant, Power Utility Seals & Gaskets
  • F(Terpolymers of VF2/HFP/TFE): Oxygenated Automotive fuels. Concentrated aqueous inorganic acids, water, steam
  • Viton Extreme(Copolymers of TFE/Propylene and Ethylene/TFE/PMVE): Automotive, Oil Exploration, Special Sealing, Ultra Harsh Environments

    The performance of Fluoroelastomers in aggressive chemicals depends on the nature of the base Polymer and the compounding ingredients used for moulding the final products (e.g. O-rings). This performance can vary significantly when end-users purchase Viton Polymer containing Rubber goods from different sources. Viton is generally compatible with hydrocarbons (an advantage over Buna-N, which is the most common O-ring material), but incompatible with ketones such as acetone and organic acids such as acetic acid. O-rings made of Viton are typically color coded as black.

    Viton O-rings have been used safely for some time in the SCUBA diving world for divers who dive with gas blends referred to as Nitrox. Viton is used because it has a lower probability of catching fire, even with the increased percentages of oxygen found in Nitrox. It is also less susceptible to decay under increased oxygen conditions.

    Viton Tubing or Viton lined Hoses are commonly recommended in automotive and other transportation fuel applications when high concentrations of biodiesel are required.


    Apex GB have over 20 years experience in manufacturing Plastic & Rubber Extrusions, Extruded Profiles and Tubing. We're quite rightfully proud of our reputation for consistently meeting the needs of customers over that time. Because we've remained small and focussed we've also remained more attentitive, more cost effective and more responsive than larger manufacturers.


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    Glossary of Extrusion Materials & Terms

    A.B.S.
    Acrylic
    Altec
    Chemical Hose
    Coextrusion
    Compression Set
    Cord
    Cutting
    D.E.H.P.-free PVC
    D.O.P.-free PVC
    Die
    Dioctyl phthalate-free PVC
    E.P.D.M.
    Elastomer
    Extruder
    Extrusion
    F.E.P.
    F.K.M.
    F.V.M.Q.
    Flouroelastomer
    Flourosilicone
    Fluorocarbon
    Fluoroelastomer
    Fluoropolymer
    Fluorosilicone
    Gaskets
    H.D.P.E.
    Hose
    L.D.P.E.
    L.L.D.P.E.
    M.D.P.E.
    Masterbatch
    Medical Tubing
    N.B.R.
    Natural Rubber
    Neoprene
    Nitrile P.V.C.
    Nitrile Rubber
    Nylon 12
    Nylon 6
    Nylon 66
    P.A.
    P.B.T.
    P.C.
    P.E.T.
    P.E.X.
    P.F.A.
    P.M.M.A.
    P.P.
    P.T.F.E.
    P.U.
    P.U.R.
    P.V.C.
    P.V.C.U.
    Peristaltic Pump Tubing
    Peroxide Cured Silicone
    Phthalate-free PVC
    Pin
    Plastic
    Plasticiser
    Platinum Cured Silicone
    Polyamide
    Polycarbonate
    Polychloroprene
    Polyester
    Polyethylene
    Polymer
    Polyolefin
    Polypropylene
    Polythene
    Polyurethane
    PolyVinylChloride
    Profile
    Quality Assurance
    Rigid P.V.C.
    Rubber
    S.P.C.
    Santoprene
    Seals
    Silicon Rubber
    Silicone Rubber
    Strip
    Synthetic Rubber
    T.P.E.
    Teflon
    Thermoplastic
    Thermoplastic Elastomer
    Thermoplastic Rubber
    Thermoset
    Tubing
    U.H.M.W.P.E.
    U.P.V.C.
    V.L.D.P.E.
    Vacuum sizing
    Vinyl
    Viton
    X.L.P.E.