Permatex Ultra Black Hi- Temp RTV Silicone 0.5oz.

Permatex Ultra Black Hi-Temp RTV Silicone 0.5oz. is a high-performance gasket sealant designed for mechanics and automotive enthusiasts. This compact sealant is ideal for addressing issues such as oil leaks, coolant seepage, and exhaust manifold leaks, particularly in high-temperature environments where traditional gaskets may fail.

The ultra-black formulation of this RTV silicone cures into a durable elastomer that can withstand continuous temperatures up to 500°F (260°C). Its room-temperature vulcanizing (RTV) technology allows it to cure without the need for heat, forming a flexible, oil-resistant barrier that can handle engine vibrations and thermal cycling.

This product is particularly beneficial for those working on high-performance engines, including carbureted V8s and modern fuel-injected platforms. The 0.5oz. tube is designed for precision application, making it perfect for small repairs or detailed sealing tasks where minimizing waste is essential.