Permatex O-Ring Lubricant is a multi-purpose anti-corrosion lubricant formulated to condition seals and extend the life of O-ring gaskets for use in a wide range of temperatures from -50F to 550F (-45C to 288C). The compound is an excellent lubricant and is compatible with most rubbers and plastic, including EPDM and EPT and provides good chemical resistance to most automotive fluids. Meets MIL-S-8660C Specifications.