Master Plumber, 4 OZ, TFE Paste With Teflon, A Pure White Thread Lubricant & Sealant Made With Teflon, Brushable Paste Dries Slowly, Non-Hardening, Withstands Up To 3,000 PSI On Gases At Temperatures From -50 Degrees Fahrenheit To +500 Degrees Fahrenheit, Jar.