Putty 2-Part 0.70 Oz Strips Black Epoxy Resin Compound 2 to 4 hr Functional Cure Mixing Ratio 1 1 Shear Strength 500 psi (minimum) Max Temp 250 Degrees F Temp Range Up to 250 Degrees F Work Life 1 hr. For Repairing Small Leaks Or Cracks In Fuel Tanks And Radiators Permanently Seals Small Holes Cracks Or Split Seams Without Draining Or Removing Gas Tank Or Radiator Applicable To Wet Surfaces Includes (2) 0.70-oz. Strips Resin and Hardener