This is the HighHeat Temperature Resistant Epoxy Putty By J-B Weld Worlds' Strongest Bond Able to Withstand: - Continuous Heat up to 450 degrees F - Intermittent Heat up to 500 degrees F - 3x stronger at higher temperatures than conventional epoxy putties Great For: - Exhaust Manifolds - Tail Pipes - Mufflers - Engine Blocks - Duct Work - Machinery - High Temperature Projects One tube of epoxy putty Net weight: 2 oz. (57 grams) Strength: 800 PSI at room temperature 600 PSI at 400 degrees F Functional cure in 8 hours. Dries machine grey. HighHeat is a handmade epoxy putty stick specifically formulated to bond and repair materials that will be exposed to high temperatures in automotive and industrial applications. It cures to a tough, hard bond with little to no shrinkage. This industrial-strength product outperforms conventional epoxy putties at high temperatures and sets in 1 hour at room temperature. After 8 hours, it can be drilled, tapped, machined, ground, filed and painted. HighHeat is rated at a tensile strength of 80 PSI and cures to a machine grey color, withstanding temperatures up to 500 degrees F. Instructions 1. Cut: Remove required amount of putty. 2. Mix: Thoroughly knead putty with fingers to a uniform color. 3. Apply: Press putty firmly to the surface to be repaired. For best results use a detergent or degreaser to first clean the surface, then roughen the surface with file or coarse sandpaper to provide the best repair. 7/26/12 pjw ir/jxs &