Industrial Sealing Technology

The mechanical seal is a combined mechanism composed of a series of simple design elements, and the sealing action is completed by two main sealing rings with flat surfaces to prevent leakage. One of the seal rings is connected with the shaft and rotates together, and the other seal ring is fixed on the housing. To seal the centrifugal pump shaft, a static seal ring is installed on the seal chamber gland. During the rotation of the pump shaft, the sealing surface of the sealing ring mounted on the shaft rubs against the sealing surface of the opposite static ring. These two seal contact surfaces act like bearings and are subject to wear. Any form of system leakage must pass through this seal interface. The force acting in the axial direction keeps the seal rings in frictional contact at all times. The source can be mechanical or hydraulic, and in many designs, it is the sum of the two. This stable contact prevents or minimizes leakage from between the friction surfaces.