Expanded graphite yarn is for weak acid and alkali, ammonia, water, oil medium, valves, as static sealing anticorrosion and sealing effect is the best. Fiber packing a good thermal conductivity, acid and alkali resistance, applicable to all kinds of solvents, gasoline, water, liquid nitrogen of pumps, valves, reactor sealed (another good thermal conductivity, acid and alkali resistance, high temperature resistance, used in high-speed operation under the condition of dynamic and static seal). After twisting, weaving into the packing, PTFE packing is a kind of pure PTFE dispersion resin as raw material, first made raw film. The PTFE without other additives. It can be widely used in food, medicine, papermaking chemical fiber etc. have strong corrosion medium valve with high cleanliness requirements, and, not suitable for use in the pump. |