... pottery and other surface anti-corrosion layer. Ring of PTFE, PTFE gasket, PTFE packing, etc. are widely used in various types of ... glass fiber and asbestos, plastic anti-flaming agent. 4.PTFE products in chemical, mechanical, electronic, electrical, military, aerospace ... other areas of the national economy played a pivotal role.Packing ,Storage & Transportatio Not classified as hazardous for transport ...