The PTFE packing is woven from pure PTFE fibers. Because it uses a solid weaving process, it has flexibility and adjustability, and can be well matched with the shaft and stuffing box. It has good corrosion resistance, good self-lubrication and anti-sticking properties. It can be used in chemical, food, medicine, paper, chemical fiber, fine chemical and other operating sites where pollution is not allowed.
PTFE packing can be divided into aramid interwoven black PTFE packing, white PTFE packing, oily black PTFE packing, oil-free black PTFE packing, split wire PTFE packing, oily white PTFE packing .
Aramid interwoven black PTFE packing is made of aramid fiber and black PTFE as raw materials, and is woven by a special process. The high-strength aramid material is interwoven in the packing to make the product more wear-resistant. It combines the excellent properties of aramid fiber and black PTFE fiber to make the product more wear-resistant, and is suitable for dynamic sealing with higher linear speed and higher media pressure. It can be used in chemical, agricultural chemical, pharmaceutical, paper, electric power and other industries, reciprocating pumps, mixers, agitators, reactors, valves and other equipment. Suitable for sewage, grease, acid-base solution, grinding media.
White PTFE packing is woven from pure PTFE fibers. It can be used in chemical industry, food, medicine, papermaking, chemical fiber, fine chemical industry and other places where pollution is not allowed. It is suitable for all chemical media except soluble alkali metals and free fluoride ions.
Oily black PTFE packing is woven from PTFE wire containing graphite and anti-corrosion lubricant. It has strong tear strength and high thermal conductivity, and low friction coefficient makes it stable and long life. It can be used for shaft sealing in food, medicine, papermaking, chemical fiber, fine chemical industry and other industries, as well as agitators, mixers, autoclaves and centrifugal pumps for sealing water, steam, solvents and other media. Applicable to most media except strong oxidizing media.
Oil-free black PTFE packing is a kind of packing woven from PTFE wire containing graphite particles.
The split wire tetrafluoro packing is woven from sintered and fully stretched multi-strand tetrafluoro wires, and is fully impregnated in tetrafluoroethylene and impregnated again during the braiding process. It has the characteristics of flexibility, dimensional stability, good compression resistance, anti-extrusion and high structural strength and density. It is one of the best packings in the industrial field. It is a general-purpose packing and can be used in food, medicine, papermaking, chemical fiber and other industries, especially high-pressure valves, plunger pumps, mixers, mixers, shafts, rods, pistons, valves, expansion joints and other equipment with high peripheral speeds. Suitable for all chemical media except soluble alkali metals and free fluoride ions.
The oily white PTFE packing is woven from pure PTFE wire and treated with special lubricant silicone oil, which will not change its volume when the filling box has a small pressure for a long time. Its low coefficient of friction prevents heating of the shaft surface even at high peripheral speeds. It is suitable for mechanical seals in corrosion-resistant media in high-concentration and highly corrosive and oxidizing chemical products. It can be used in the food industry, medicine, papermaking, chemical fiber, fine chemical industry and other pumps, valves and flange equipment that are not allowed to be polluted.
The above content is the classification of PTFE packing that I shared with you today. I hope you can have a better understanding of PTFE packing after reading it.