Each Berkeley wear ring is constructed from seamless stainless steel. By using a seamless wear ring Berkeley can CNC machine these wear rings to exacting tolerances. These wear rings are not stepped so that there is no water deflection to the impeller.

These bronze shouldered wear rings have found fame amongst pump builders. Their unique shoulder allow them to take up some end clearance although it does deflect water on entry. These tolerances can optimally be taken up by minor pump shaft machining allowing the use of an original Berkeley wear ring.