Silicone O-rings 75 Durometer are heat resistant up to 400*F and higher tempertures with shorter life. Cold flexibility down to -75*F
Typically used in applications with engine and transmission oil, animal an vegetable oil and grease, Brake fluid (non petroleum base), fire resistant hydraulic fluid, moderately water resistant and diluted salt solutions.
NOT COMPATIBLE WITH....Hydrocarbon based fuels, benzene, toluene, aromatic mineral oil, acids, alkalis, superheated steam or trichloroethylene
Silicone O-rings are FDA approved