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Black PTFE packing, also known as the Almighty Wang Pan root, the packing by a graphite-containing PTFE fiber woven from the packing. Pump shaft seals for all chemical media. The low friction coefficient makes the packing has the stability long life, it also has the good tensile strength and the high heat conductivity.

Packing has good lubrication will not cut shaft rod, and can reduce the replacement cost of bushings. Suitable for sealing alkali, solvent, water, steam pump, in the centrifugal pump, autoclaves, mixers, mixers and other acids, in addition to acid oxides (such as Aqua regia, fuming nitric acid, fuming nitric acid) and so on.