Permatex Tack and Seal Gasket Sealant keeps large gaskets in place during positioning and assembly. Features a non-hardening formula for easy disassembly and will not stain, keeping your hands clean. Resists engine fluids including diesel fuels and synthetic oils, with a temperature range from -65°F to 400°F (-54°C to 204°C). Suggested Applications: Seals air conditioning, fuel fittings, radiator hoses, PVC fittings and cork, paper, cardboard, felt and metal gaskets.