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Compressed Air Encyclopedia

Viton (Fluorocarbon)
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Viton is most widely used in high-temperature compressed air applications and applications that require chemical compatibility.

Viton® is the seal compound most often used in high-temperature compressed air applications. It is also commonly used in applications where seals can come into contact with chemicals that would attack Buna.

Although the generic name for the compound is fluorocarbon, it is commonly referred to as Viton which is a trade name registered to DuPont Dow Elastomers.

Applications

  • High-temperature compressed air systems
  • Applications requiring resistance to some chemicals
  • Hard vacuum service

Compatibility

  • Generally recommended for:
    • High-temperature compressed air systems
    • Gasoline & gasoline/alcohol blends
    • Some acids
    • Silicone fluids
    • Silicone greases
    • Applications with direct exposure to sunlight and ozone
    • Exposure to many chemicals
  • Not recommended for:
    • Ketones
    • Amines
    • Nitro hydrocarbons
    • Low molecular weight esters
    • Low molecular weight ethers
    • Hot hydrofluoric acid
    • Hot chlorosulfonic acid
    • Skydrol® fluids
    • Low temperature applications requiring flexibility

Specifications

  • Temperature Range: -20°F to 400°F (dry heat)
  • Hardness: 50 – 95 Shore A
  • Color: Black
  • Trade Names:
    • Viton (DuPont Dow Elastomers)
    • Fluorel (3M Company)
    • Technoflon (Montedison, USA)
  • ASTM D1418 Designation: FKM
  • ASTM D2000/SAE J200 Type, Class: HK

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