These sealants prevent further coolant and fluid leakage until gaskets can be replaced in automotive applications. They seal holes, cracks, and gaps in cylinder head gaskets, radiator gaskets, heater cores, and engine blocks.

These sealants fill holes and cracks to prevent leaks in tanks that hold automotive fluids such as diesel fuel, gasoline, coolants, and other solvents. They can often be applied without emptying the tank and provide a temporary solution until further repairs or restoration can be done.

These products seal cracks and holes in the iron and steel parts of exhaust systems such as exhaust manifolds, mufflers, and pipes. They also repair components in other high-temperature applications such as furnaces and grills.