Most people may think that sealing rings are exclusive to hydraulic jacks, while screw jacks do not use sealing rings. If you think so, you are completely wrong. Today, Guanhang will take you to understand that screw jacks also require sealing rings for sealing.

Traditional thinking once led people to believe that the sealing ring is used to seal the hydraulic jack and prevent hydraulic oil overflow under high pressure. While this is important, many people also overlook the need to prevent dust and impurities from entering. This is not only necessary for hydraulic jacks, but also for screw jacks.

Although the interior of a screw jack is mainly composed of mechanical components that complete lifting and jacking through mechanical interactions, there is no such thing as hydraulic oil overflow. However, once dust and impurities invade and accumulate over a long period of time, it will inevitably intensify the wear of internal components, thereby seriously shortening the life of the screw jack.

Furthermore, although the screw jack does not require hydraulic oil, it still needs to be lubricated internally, so lubricating oil is required for lubrication treatment. The sealing ring can to some extent organize the overflow of lubricating oil, thereby maintaining the lubrication effect for a long time. Therefore, the screw jack also needs a sealing ring for sealing.