Wm Harvey 017065 Gas Line PTFE Thread Seal Tape Wm Harvey 017065 Gas Line PTFE Thread Seal Tape Features:;Yellow gas line thread seal tape with PTFE;Extra heavy, full density PTFE tape especially for gas lines;Recommended leakproof sealant for lines carrying natural gas, propane, butane; and water, oil, and chemical installations;Use on pipe, conduit, vales, bolts, anything with a thread;Permits easy disassembly;Use on plastic, stainless steel, aluminum and all metals, ceramic, synthetic rubber, Monel and carbon pipe;Pressure rating 10,000 PSI;Tolerates -450; F to +500; F;Suitable for use on oxygen systems;Meets Federal specification T-27730A