Master plumber, 8 oz, tfe paste with Teflon, a pure white thread lubricant & sealant made with Teflon, Brush able paste dries slowly, non-hardening, withstands up to 3000 psi on gases at temps from -50°ree. Fahrenheit to +500°ree. Fahrenheit, jar. The product is manufactured in china. Easy installation and easy handling.