Joint Sealant Tape, Material PTFE, Density 0.45 to 0.55sg, compressed to 2.0 to 2.1sg, Width 1/2 In., Length 1800 In., Color White, Gas Pressure Range 0 to 232 psi, Performance Temp. Range -450 Degrees to 600 Degrees F, Liquid Pressure Range 0 to 3000 psi, Application Pliable Instant Flange Gasket Resists Common Chemicals and will not Deteriorate 100 Percent Expanded PTFE UHF Material, Standards Meets FDA 21 CFR 177.1550 and 21 CFR 175.105, CSA Recognized ComponentPOLY-TEMP