Permatex Ultra Rubber Gasket Sealant and Dressing is formulated specially for rubber gaskets and will condition gaskets for longer life and seal potential leak paths. It also functions to hold gaskets in-place during installation. The non-hardening, soft-setting formula makes gasket repositioning quick and easy. Provides outstanding oil and fluid resistance. Temperature range -65 degree fahrenheit  to 400 degree fahrenheit. When a chemical gasket is not an option, Permatex offers a wide range of gasket sealants suitable for applications on both import and domestic vehicles of any model year or performance caliber.