Trade Names
  • AFLAS® — AGC Chemicals
ASTM D1418 Designation
FKM
ASTM D2000/SAE J200 Type, Class
HK
Apple Compound Designation
AF
Standard Color
Black
Description
A copolymer of tetrafluoroethylene/propylene, TFE/P can offer a combination of high temperature and chemical resistance.
Key Use
Seals for oil field, aerospace, chemical and general industrial environments.
Temperature Range
Standard Compound: +14°F to +446°F
Hardness (Shore A)
60 to 90
Features
  • Resistance to a wide range of chemicals, high temperatures and electrical capabilities give broad application diversity.
  • TFE/P have resistance to acids and bases, steam/hot water, corrosion inhibitors, oils and lubricants, and industrial solvents. TFE/P also offer improved low temperature properties over most fluoroelastomers.
Limitations
  • Tests have shown that other FKM elastomers are recommended for automotive fuels since they have less volume swell than TFE/P.
  • TFE/P has shown to have less than desirable results when exposed to toluene, ethers, ketones and acetic acid.

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