White, non-hardening paste. Non-separating & non-toxic. Withstands up to 3,000 PSI on gases. Withstands up to 10,000 PSI on liquids. For use with water, steam & natural gas. For LP gas, oil & caustics. Use on dilute acid lines of PVC & CPVC. Use on ABS, Cycolac & Polypropylene.