Centrifugal pump seal ring has a labyrinth seal and mechanical seal two. Labyrinth seal technical requirements: Check the sealing teeth at all levels, there should be no dirt, rust, burrs, cracks, bending, notch deformation and breakage and other defects, seal damage and clearance tolerance should be replaced, seal assembly should not loose or too loose Tight phenomenon, the tip of the seal should be sharp. The small machine pump, the seal teeth only one, and larger, not with the shaft seal teeth, but with the bearing cap. Oil ring thickness of 3 ~ 5mm. In high-speed centrifugal pumps, its oil seal is a mechanical seal.
