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Use the powerful and efficient Permatex Ultra Black Gasket Maker in automotive assembly and other applications. This fast-curing silicone gasket maker prevents leaks and wastage of gas and fluids between connecting surfaces in automotive and marine setups. The durable paste offers high flexibility to gaskets and resists the effect of vibrations and sensors. With a temperature resistance capacity of -65 deg. F to 500 deg. F, it protects the surface from overheating and from corrosion and fluid contamination.