Permatex High Temp Set Time:1 Hour Cure Time:8 hours Up to 750 PSI Strength Dries Golden Brown Titanium Reinforced Industrial Strength withstands Heats up-to 450ºF Continuous and 500ºF  intermittent Use on:Engine Blocks, Tail Pipes,Exhaust Manifolds, Machinery Mufflers and other High Temperature Project.