Wear ring


These wear rings are used with closed impeller pumps to restrict leakage from the high-pressure side of the pump to the low pressure side.

  • Most designs cannot be adjusted so they should be replaced when the recommended clearance is doubled. The problem is determining when this has happened.
  • Wear ring wear is indicated by a pumps capacity dropping while the amperage is staying the same.
  • Open impeller pumps do not use wear rings. In modern pump designs you can compensate for impeller and volute wear by adjusting the impeller to the volute or back plate without having to take the pump apart.