The Texlon® tapes are pure PTFE sealing tapes made of belt type. The tape have a homogeneous structure so it can be available to all types of flanges and instruments. The device can resist corrosion on all chemicals except melted alkali metals and fluorine gas. The tape are sealed on a wide temperature ranging from -240 °C to +280 °C up to +315 °C. The flow material will not be contaminated by using this device. A stable sealing performance is achieved for a long time without aging. The tape can be used easily at flange and duct. The tape can quickly salvage ruined metallic gaskets.The tapes are used on foods, drinks, pharmacy, paper manufactures and chemical fibers. It can also be used in piping wide aperture instrument, flange, gasket, manhole packing, etc.