PTFE Back Up Ring / Gland Packing
Teflon gaskets and Teflon O-rings are made of pure polytetrafluoroethylene (PTFE) and have the characteristics of corrosion resistance, high temperature resistance and low friction. They can be used in combination with U-packing or O-rings to prevent seal extrusion. Compression type. Spring Energized PTFE Lip Seals is a U-shaped Teflon seal with a special spring inside, which can prevent liquid from leaking from mechanical gaps. Gland packing is a packing made of pure PTFE fiber. It is used in machines that control fluids and is inserted around the rotating or reciprocating axis to prevent fluid leakage.