PTFE packing ring with PTFE fiber as the main material, woven into cloth (or packing), impregnated PTFE emulsion by mold pressing molding, sintering. The sealing ring has the advantages of strong sealing, high pressure resistance and strong corrosion resistance. The expanded graphite packing ring is continuously wound by the expanded graphite paper, which is compressed and molded in the mold. It has excellent sealing materials due to a variety of excellent properties, used alone or in combination with other fillers, especially suitable for high-temperature, high-pressure conditions of the static sealing site.
It can be safely used in all media except Aqua Regia and strong oxidizing acid.