Contact dynamic sealing method and disc sealing ring dynamic sealing device

A contact type dynamic sealing method and a disc-shaped sealing ring dynamic sealing device belong to the dynamic sealing device in the field of mechanical transmission. It solves the problem of oil leakage caused by the wear and aging of the traditional cup sealing ring. Near the leakage gap of the transmission device, there is a dish-shaped sealing ring composed of a positioning ring, an elastic body and at least one sealing ring. Install the positioning ring of the sealing ring on the journal of the transmission shaft or the sealing pressure of the box bearing. The inner side of the cover, so that the sealing ring of the sealing ring is in close contact with the inner surface of the bearing sealing gland or the side of the bearing retaining ring, blocking the leakage gap between the transmission shaft and the box bearing sealing gland to achieve the purpose of sealing. There are many structural forms of the disc seal ring, which has the characteristics of simple structure, convenient installation and disassembly, good sealing effect and long service life. It is suitable for dustproof and lubricating oil sealing of various transmission boxes.