Product Details: Outfit your semi truck to be Ready for the Road Ahead™ with ultra-strong and solid silicone seals, with the Permatex ULTRA GREY® RTV Silicone Gasket Maker. Thanks to its ability to create silicone gaskets from a liquid solution, this replacement device is the ideal option to seal exhaust systems, engines, gearboxes, and more. Crafted with a sophisticated system that keeps parts at their best with a resistance to water, oil , and other fluids. FleetPride is your First Click in Heavy Duty®.