- Trade Name
-
- Viton™ — Chemours Company
- Dyneon — 3M Company
- DAI-EL — Daikin
- Technoflow — Solvay
- ASTM D1418 Designation
- FKM
- ASTM D2000/SAE Type, Class
- HK
- Apple Compound Designation
- VT
- Standard Color
- Black
- Description
- Combining high temperature resistance with outstanding chemical resistance, Fluorocarbon-based compounds approach the ideal for a universal o-ring material.
- Key Uses
- Seals for aircraft engines. Seals for automotive fuel handling systems. High temperature/low compression set applications. Wide chemical exposure situations. Low outgassing makes excellent vacuum seals.
- Temperature Range
-
- Standard Compound: -13°F to +446°F
- Special Compounds: -40°F to +446°F
- Hardness (Shore A)
- 45 to 90
- Features
-
- High fluorine grades offer higher resistance to swell in high octane and oxygenated fuel blends. This gives superior performance in Ethanol/Methanol blended gasoline. Also, Fluorocarbon offers improved resistance to steam for higher temperature services. Low temperature bases can improve performance to -40°F. New polymers being offered have improved chemical resistance and low temperature performance.
- Viton™ Extreme™ ETP offers similar chemical compatibility as FFKM with temperature resistance to +446°F.
- Special compounds, using new polymer technologies, provide improved low temperature performance with a TR(10) of -40°F and brittleness to -76°F.
- Limitations
- 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.