Temperature range -75°F to 700°F intermittent Replaces almost any worn out gasket Resists cracking and migrating Resists auto and shop fluids TOP SEAL RED RTV SILICONE GASKET MAKER replaces most cut gaskets. Forms to any shape instantly, cures fast. Resists cracking, shrinking and migration caused by thermal cycling. flexible and stable at temperatures from -80°F to 700°F (-62C to 370°C). Resist oil, transmission fluid, water and antifreeze. Replaces cork, felt, paper, rubber and asbestos gaskets. Excellent for exhaust manifold, valve covers, oil pans and more. top seal 85g