... metal, glass, pottery, anti-corrosion layers. Various PTFE rings, PTFE gaskets, PTFE packing is widely used in all kinds of anti ... sealing. In addition, can also be used for spinning, the PTFE fiber - Teflon (foreign trade name Teflon). Chemical, petrochemical, ... production of high purity products (such as ion-exchange membrane electrolysis), viscous material handling operations, health requires a high ...