Made of pure, virgin polytetrafluorethylene (PTFE), this roll of Petro-Tape sealant is ideal for use on lines carrying fuels, acids and alkalis, and solvents and gases, and suitable for threaded pipe connections, valve stems, and hydraulic pressure lines. It is white and measures 540 inches long, 3/4 inch wide, and is 3 mil thick. Its temperature range is -400 Degrees F to 500 Degrees F, and the liquid pressure range is 2,000 PSI.