Permatex Ultra Copper Maximum Temperature RTV Silicone Gasket Maker is a high-performance sealant that is designed to withstand extreme temperatures and harsh conditions. This product is perfect for use in automotive, marine, and industrial applications where a reliable and durable seal is needed. It is made with a special silicone formula that provides excellent adhesion and flexibility, allowing it to effectively seal gaps and leaks. The 3 oz size makes it convenient for small repairs and touch-ups. This gasket maker is ideal for use on engines, exhaust systems, and other high-temperature areas, providing a long-lasting and leak-proof seal.