Ultra Copper Silicone Gasket Sealant

Permatex Ultra Copper Silicone Gasket Sealant Permatex Ultra Copper Silicone Gasket Sealant is an advanced RTV silicone formulated for demanding automotive and industrial sealing applications. Engineered for superior durability, it provides reliable, long-lasting gaskets and seals that withstand heat, oil and vibration. Extreme temperature performance: Works from -65°F to 700°F , making it ideal for exhaust systems, manifolds and other high-heat areas. Outstanding oil resistance: Up to 3x more oil resistant than conventional silicone, resisting breakdown from engine fluids and fuels. Superior flexibility: Remains elastic and resilient — 8x more flexible than a cut gasket to maintain seals through thermal cycling and vibration. Easy application: Smooth bead, tack-free finish and bonds to metal, glass, ceramic and many plastics (surface preparation recommended). Versatile use: Perfect for exhaust flanges, valve covers, water pumps, oil pans and other sealing tasks where high heat and chemical exposure are concerns. Choose Permatex Ultra Copper for a premium RTV silicone that delivers long-term reliability under the toughest conditions.