The Permatex Ultra Multipurpose RTV Silicone Tube Gasket Maker is the perfect solution for sealing and protecting your automotive components. This tube of silicone-based formula is non-corrosive to metal and other materials, preserving the integrity of the sealed surfaces. It is also resistant to automotive fluids such as oil, coolant and transmission fluids, preventing leaks and maintaining the integrity of the sealed components. FleetPride is your First Click in Heavy Duty®.