... requirements of corrosion-resistant pipes, vessels, pumps, valves and system radar, high frequency communications equipment, radio equipment. ... impregnating liquid and the surface of the metal, glass, pottery, anti-corrosion layers. Various PTFE rings, PTFE gaskets, PTFE packing is ... In addition, can also be used for spinning, the PTFE fiber - Teflon (foreign trade name Teflon). Chemical, petrochemical ...