... performance requirements of corrosion-resistant pipes, vessels, pumps, valves and system radar, high frequency communications equipment, radio ... glass, pottery, anti-corrosion layers. Various PTFE rings, PTFE gaskets, PTFE packing is widely used in all kinds of ... , can also be used for spinning, the PTFE fiber - Teflon (foreign trade name Teflon). Chemical, petrochemical, oil refining, chlor-alkali ...