The effect of expanded polytetrachloroethylene (PTFE) applied to mechanical seals-

The effect of expanded polytetrachloroethylene (PTFE) used in mechanical seals

　2017-01-03　　

The effect of expanded polytetrachloroethylene (PTFE) used in mechanical seals not only retains the original excellent properties of PTFE, such as good chemical stability, low friction coefficient and non-aging characteristics, but also expands the use temperature Range, improved tensile strength, but also has some new characteristics, such as porosity, air permeability, hydrophobicity and extremely high toughness. According to its manufacturing process and additives, it can be made into flange sealing tape (gasket substitute), valve stem packing and GF0 fiber pump packing. Among them, the sealing tape has high strength and good sealing performance, especially strong adaptability to damage or special-shaped flange sealing, simple construction, and good economy.　　221.html,

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