Master Plumber, 8 OZ, Yellow Formula 55 Thread Seal, Yellow Pipe Thread Compound For Lines Carrying LP, Natural Gas & Oxygen, Use On All Metals, Plastic PVC, CPVC, ABS & Nylon, Tolerates -50°ree. Fahrenheit To +400°ree. Fahrenheit, Gas To 3000 PSI, Liquid To 6000 PSI, Slow Drying, Never Seizes, Allows Easy Disassembly, UPC Listed, Jar.