Silicone with Copper "Mega Copper" is made according to the the advanced silicone formula for automotive gas sealing. Suitable for water pumps, exhaust manifold, turbochargers and everywhere else where a seal is required. HIgh temperature copper is intended to replace rubber, silicone, felt and other sealing devices to ensure leakage protection. Safe to use in all cars. Resistant to oil, water, antifreeze mixtures, lubricant and transmission fluid. Does not cause corrosion in conjuction with steel, aluminum and iron. Weak smell. It is characterized by greater adaptability than other seals.