Kalrez® 4079 perfluroelastomer combines the elastomeric properties of Viton with the chemical resistance of PTFE, making it the best possible o-ring material available. Kalrez® 4079 should be considered for service in high temperature, corrosive environments such as:
- Polar Solvents such as Ketones, Esters and Ethers
- Strong Organic Solvents such as Tetrahydrofuran, Bensene, Dimethylformamide and Perchloroethylene
- Acids such as Hydrochloric, Nitric and Sulfuric
- Strong Oxidizing Agents such as Dinitrogen Tetroxide and Fuming Nitric Acid
- Metal Halogen Compounds such as Titanium Tetrachloride and Diethylaluminum Chloride
- Hot Mercury and Caustic Soda
- Chlorine-Wet and Dry
- Inorganic Salt Solutions
- Fuels such as JP-5, Aviation gas and Kerosene
Kalrez® 4079 exhibits exceptional thermal stability and is serviceable at long-term temperatures to 316ºC and intermittent temperatures to 343ºC. Kalrez® 4079 is not recommended for use in sealing applications below -5ºC.