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 engineered for engine builders, mechanics, and automotive enthusiasts who demand reliable gasket sealing on critical engine components. Whether you're rebuilding a cylinder head, sealing an oil pan, or closing off valve cover gaskets, this product eliminates the need for traditional cut gaskets in many applications. The carded tube format delivers a controlled, easy-to-apply bead that works on both ferrous and non-ferrous metals, making it indispensable for serious engine work where vibration and thermal stress demand absolute dependability.

Ultra Black Gasket Maker cures anaerobic—meaning it hardens only in the absence of air and when clamped between metal surfaces—ensuring a superior seal that resists oil, coolant, and fuel exposure without the brittleness of 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. The ultra-black color helps distinguish sealed surfaces during disassembly and inspection, a practical detail that reduces confusion on complex engine rebuilds. This product bonds 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.

Mechanics and engine builders rely on this gasket maker for applications ranging from stock OEM rebuilds to turbocharged and supercharged engine assembly, where traditional cork or paper gaskets can fail under load. The 3.35 oz carded tube provides sufficient volume for multiple gasket surfaces on a typical engine tear-down without waste, and the application tube design ensures precise placement without excess squeeze-out. Compatibility spans virtually all ferrous engine blocks, aluminum cylinder heads, intake manifolds, and transmission pans, making it a universal solution for any seal-critical engine work. For optimal results, surfaces should be clean and dry, and components must remain clamped during the initial cure period to ensure proper sealing geometry.