Permatex Super High Tack Gasket Sealant is a non-hardening gasket sealant. It keeps large gaskets in place during positioning and assembly and ensures easy disassembly. "Clean hands" formula won't stain. Temperature range -65°F to 400°F (-54°C to 204°C); resists engine fluids including diesel fuels and synthetic oils. For use sealing rubber, cork, paper and composite gaskets, and hose connections.