For use on both plastic and metal pipe and fittings. Grit-free and does not contain PTFE (teflon). Sets soft; no cure time required. Never hardens, cracks or becomes brittle. No odor. Non-separating, non-flammable, and non-hazardous. Leak-proof hydraulic resistance to 12,000 psi. Withstands gas pressure to 2,600 psi. Performs over a temperature range of -50 degrees to 400 degrees F (on steel pipe). For use on all metals, including galvanized steel, black iron, aluminum, copper, brass, stainless steel, and on PVC, ABS, and CPVC plastics (for use on specific brands of CPVC pipe, verify suitability with pipe manufacturer). Not recommended for lines carrying concentrated acids, alkalis, ketones, and oxygen. Certified to ANSI/NSF Standard 61; sa