About the Harvey 020020 PTFE Teflon Gasket Rope
PTFE String is made with pure PTFE in string form for gaskets and packing valves; will withstand vibration and high pressure. Recommended for plastic, stainless steel, aluminum, ceramic, synthetic rubber, nylon, monel, carbon pipe, chemicals, corrosives, Freon 22, hydraulic fluids and aromatic fuels. Same tolerance as PTFE tape.