The Hi-seal EXPELLER 028 Slurry Pump Spare Parts is an important part of the expeller seal. The expeller fluid dynamic seal refers to the installation of an open impeller in the opposite direction of the coaxial direction near the back of the impeller rear cover of the pump. When the pump is working, the expeller rotates with the pump spindle, and the liquid in the expeller rotates together. The rotating liquid creates an outward centrifugal force that resists the liquid flowing to the mechanical seal and reduces the mechanical seal. pressure. On the other hand, the solid particles in the medium are prevented from entering the friction pair of the mechanical seal, which reduces the wear of the mechanical seal block and prolongs its service life.