Tape is effective and simple to use. - 99.9% pure, medium density, chemically inert tape that is suitable for oxygen service. - UL Listed. - Meets Mil. Spec. T-27730A. White color. Material / PTFE Density / 0.7 to 0.8sg Width / 1/2 in Length / 260 in Thickness / 3.5+-0.5 mil Color / White Gas Pressure Range / 0 to 2000 psi Performance Temp. Range / -400 Degrees to 550 Degrees F Liquid Pressure Range / 0 to 10,000 psi Application / Used to Form a Leak Proof Seal and Help Prevent Cross Threading on Pipe Threads Standards / Meets FDA 21 CFR.1550, MIL-T-27730A, UL