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不锈钢球阀为何都用聚四氟乙烯密封

Author:天津球阀
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       不锈钢球阀由于聚四氟乙烯配件有良好的自润滑性，与球体的摩擦磨损小，而且由于球体加工工艺的改进，使粗糙度降低，从而提高了球阀的使用寿命；

      目前市场上绝大多数的阀座都是用聚四氟乙烯等弹性材料制造，金属与非金属材料组成的密封，通常称为软密封；一般说来，软密封的密封性容易保证，而且对密封表面的加工精度与表面粗糙度要求也不很高；


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