聚四氟乙烯(氟塑料)薄膜包覆的橡胶密封圈,由于活动密封的工作表面牢固地粘结一层F-4薄膜,直接改变了活动密封工作表面的摩擦对偶,充分显示出F-4塑料极低的摩擦系数、自润滑性和耐磨性,又保持着橡胶高弹性的特点,完全可以达到密封性的要求,从而弥补了橡胶摩擦力大、易磨损等缺陷。实践证明,此种组合密封圈用于气压系统附件的活动密封是比较适宜的。 Teflon (fluoroplastics) film coated rubber seals, the active seal of the work surface firmly bonded to a layer of F-4 film, directly change the active seal surface friction dual, fully demonstrated the F-4 Plastic low friction coefficient, self-lubricating and wear resistance, but also retains the characteristics of high rubber elasticity, can meet the sealing requirements, thus making up the rubber friction, easy to wear and other defects. Practice has proved that such a combination of seals used in the pneumatic system attachment of the active seal is more appropriate.