100% unsintered virgin white, 3.5 mil PTFE (polytetrafluoroethylene) pipe thread seal tape with standard density is wound on labeled plastic spools. For all industrial applications, including water, oil, gas, most chemicals, hydraulic and high pressure lines. Highly conformable, low friction, non-stick film used to lubricate a wide variety of joints, making them easy to assemble for leak proof seals. Helps provide a superior fit in the most complicated shapes, corners or edges.