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低压防爆开关的橡胶密封圈是这类开关进线装置达到防爆要求的关键零件。密封圈的外径要与进线装置的内径配合,密封圈内径(包括同心切槽)要与电缆外径配合,为保证密封性能,密封圈还要有一定的厚度。在安装使用时依靠压盘(俗称卡兰)或压紧螺母对密封圈加压,使之产生变形(即使之外径扩张,内径缩小),从而达到密封圈与
Low-pressure explosion-proof rubber switch seals is the arrival of such devices to meet the explosion-proof key components. The outer diameter of the sealing ring should be matched with the inner diameter of the inlet device. The inner diameter of the sealing ring (including the concentric grooves) should be matched with the outer diameter of the cable. To ensure the sealing performance, the sealing ring should have a certain thickness. In the installation of relying on the pressure plate (commonly known as Karan) or compression nut to seal the pressure, so that deformation (even if the outer diameter expansion, diameter reduction), so as to achieve the ring and