Lub-O-Seal® Pipe Fitters’ Sealant with TPFE is an environmentally safe thread compound containing no heavy metals such as lead, zinc, or copper. It is the perfect solution for today’s rigid EPA requirements. Lub-O-Seal Pipe Fitters’ Sealant with PTFE seals threads and permits tighter makeup with less torque. It effectively seals against gas, petroleum oil, solvents, alcohol, steam, water, et cetera. It never hardens, oxidizes, or evaporates on threads or in the container, allows easy breakout with less thread damage, maintains seal under severe vibration or cycled loading, and is easily applied over a wide temperature range (-20 to +500 °F).