Ultra Black Gasket Maker 3.35 oz Carded Tube

The Ultra Black Gasket Maker 3.35 oz Carded Tube from PERMATEX is a professional-grade anaerobic sealant designed for engine builders, mechanics, and automotive enthusiasts who require reliable gasket sealing on critical engine components. This versatile product is ideal for applications such as rebuilding cylinder heads, sealing oil pans, and closing off valve cover gaskets, effectively replacing traditional cut gaskets in many scenarios.

The Ultra Black Gasket Maker cures anaerobically, meaning it hardens only in the absence of air and when clamped between metal surfaces. This ensures a superior seal that withstands exposure to oil, coolant, and fuel without the brittleness associated with traditional gasket materials. The formulation reaches full cure within 24 hours under normal shop conditions and can handle engine operating temperatures up to 300°F continuously, with brief excursions to 350°F.

Mechanics and engine builders rely on this gasket maker for its ability to bond directly to metal surfaces, eliminating the risk of gasket blow-out under sustained boost pressure or extreme heat cycling common in modified or high-performance engines. The ultra-black color aids in distinguishing sealed surfaces during disassembly and inspection, reducing confusion during complex engine rebuilds.