Use Of Packing
Asbestos packing is the best for weak acid alkali, liquid ammonia, water, oil medium, valve, and static sealing and anticorrosion seal. Fiber packing a good thermal conductivity, acid and alkali, suitable for all kinds of solvents, petrol, water, liquid nitrogen medium pumps, valves, reactor seals (another kind of thermal conductivity, acid and alkali resistance, high temperature, suitable for high-speed operation under the dynamic, static sealing). PTFE packing is pure PTFE dispersed resin as raw material, first made of raw materials, and then after twisting, woven into a packing. This Teflon no other additives, can be widely used in food, pharmaceutical, paper chemical fiber, such as a high degree of cleanliness requirements, and a strong corrosive media valve, not suitable for use in water pumps. Aramid Packing has a very good high rotational speed, the nature of the modulus (known as artificial metal wire) Its strength is three times times the wire, the weight is five times times lighter than the wire. Therefore, compared with other types of packing, it can resist particles crystallization medium and higher temperature can be used alone or with other packing combination, suitable for the easy wear medium containing solid particles, it is recommended to use in superheated steam, solvent, liquefied steam, syrup and other easy to grind fluid. The pump system is a good substitute for asbestos.