... and other surface anti-corrosion layer. Ring of PTFE, PTFE gasket, PTFE packing, etc. are widely used in various types ... made into bars, plates, tubes, films and various special products for the aerospace, chemical, electronic, mechanical, pharmaceuticalAnd other ... glass fiber and asbestos, plastic anti-flaming agent. 4.PTFE products in chemical, mechanical, electronic, electrical, military, aerospace, ...