Viton O-Ring Seal
Viton O-Ring Seal
Viton o-rings (FKM o-rings) have excellent resistance to high temperatures, ozone, weather, oxygen, mineral oil, fuels, hydraulic fluids, aromatics and many solvents. Fluorocarbon possesses low gas permeability, low compression set, and good mechanical properties.
Key uses for Viton O-Rings
Key uses for Viton o-rings includes seals for aircraft engines and automotive fuel handling systems. Other uses might include high temperature and low compression set applications. Wide chemical exposure situations. Hard vacuum service.
Basic service temperature range is -20°C to 205°C (Short periods up to 230°C).
Other Types are Viton O-Ring:
Type A is commonly available in 75 & 90 Shore Hardness: – V75 & V90. These compounds are normally stocked in Black, although other colours can be manufactured, i.e. Brown or Green.
Type B is generally used in Chemical Process plants, Power Utility Seals and Gaskets.
Type F – is used for Oxygenated Automotive fuels. Concentrated aqueous inorganic acids, water and steam.
Type ETP is also known as Viton Extreme. If offers excellent Chemical resistance and greater performance compared to standard compounds. Used for Automotive & Off-Road – High pH lubricants, greases, & Coolants. Oil Exploration/ Production – Drilling Mud, Sour Wells. Special sealing requirements – solvents, coatings.
Additionally, specialty versions of these types are available to provide improved low temperature flexibility. These are called LT types, for example, GLT, and GFLT. These materials perform like the A, and F families. Respectively GLT & GFLT provide improved low temperature performance with a TR (10) of -40°F and brittleness to -76°F.
Fluorocarbons are not recommended for exposure to ketones, amines, low molecular weight esters and ethers, nitro hydrocarbons, hot hydrofluoric or chlorosulfonic acids, or Skydrol® fluids. They are also not recommended for situations requiring good low temperature flexibility.