Wm Harvey 025050 Pipe Thread Sealing Compound Wm Harvey 025050 Pipe Thread Sealing Compound Features:;Special yellow compound for lines carrying LP, natural gas and oxygen;Use Harvey Seal on all metals, plastic PVC, CPVC, ABS and nylon threads;Tolerates -50; F to +400; F;Tolerates gas to 3000 PSI, liquid to 6000 PSI;Soft, slow drying, never seizes, allows easy disassembly;Our best sealant for all types of gas lines;Yellow;Brush top jar;1/2 pint