Rubber sealing ring

The utility model relates to a rubber sealing ring, and belongs to the technical field of rubber product manufacturing. The sealing ring is mainly characterized in that an annular sealing boss and an annular sealing edge angle are arranged on one surface of the rubber sealing ring; the annular sealing edge angle is arranged at the opening of the sealing ring, and the outer end face of the annular sealing edge angle inclines inwards, so that the outer contour is of a conical structure. When the locking nut is screwed, the annular sealing blade angle goes deep into the gap between the bolt and the via hole, and the gap is filled with the annular sealing blade angle. The sealing ring is simple in structure and reasonable in design, adopts insertion type sealing and has the advantages of being large in sealing area, sealing pressure at the position of a leakage channel is increased when the sealing ring is used, a better sealing effect can be achieved, and the service life of the sealing ring is prolonged. 本实用新型涉