Ultra Red Gasket Maker 13 oz Cartridge

The Ultra Red Gasket Maker 13 oz Cartridge by PERMATEX is an essential fluid-sealing compound for serious mechanics and automotive enthusiasts who demand reliability in engine assembly and modification work. Whether you're rebuilding a stock engine, installing a performance head gasket, or sealing critical oil passages on a modified powerplant, this product delivers consistent, dependable results where leaks can compromise both performance and longevity.

The 13 oz cartridge format makes it ideal for professional shops and DIY builders who value precision application and waste-free dispensing during high-stakes engine work. Ultra Red Gasket Maker uses a brushable, one-part silicone formulation that cures at room temperature without additional catalysts or clamping requirements. The deep red color aids visibility during application, allowing you to confirm complete coverage across gasket surfaces and sealing points—critical when working with tight tolerances or complex port configurations.

This compound withstands oil, coolant, fuel, and vacuum exposure, with temperature resistance suited for both naturally aspirated and forced-induction engines, making it suitable for stock repairs and modified builds alike. The cartridge format pairs seamlessly with standard caulking guns for controlled, smooth bead application without drips or over-application. This gasket maker is ideal for valve cover gaskets, oil pan seals, timing cover applications, and any non-pressurized fluid joint.