Lubricates and seals all threaded joints. White. Non-hardening, non-separating, non-toxic paste. Withstands up to 3000 psi on gases from -50 to 400 deg F and 10,000 psi on liquids from -50 to 500 deg F. For use with water, steam, natural and LP gas, oil, caustics or dilute acid lines of PVC, CPVC, ABS, Cycolac, Polypropylene, iron, steel or copper. NSF and IAPMO listed. Brush included.