Withstands temperatures up to 250°F (121°C) Hardens in 5-10 minutes and cures fully in 24 hours, enabling the system to be up and running again in no time. Can be applied under water for submerged pipe leaks. After one hour can be drilled, tapped, filed, sawed, sanded, and painted - allowing the job to be easily finished in little time. Made in U.S.A. 19571