Oatey® Great White® Pipe Joint Compound With PTFE is a non-hardening, non-separating, non-toxic paste that lubricates and seals all threaded joints Lubricates and seals all threaded jointsNon-hardening, non-separating and non-toxic pasteWithstands up to 3000 PSI on gases from -50 degree to +400 degree Fahrenheit and 10000 PSI on liquids from -50 degree to +500 degree FahrenheitFor use with water, steam, caustics or dilute acid lines of PVC, CPVC, ABS, cycolac, polypropylene, iron, steel or copper