Patent ID: 6739829
Filing Date: 2004-05-25
Classification: F04D

Abstract:
A seal for use in a centrifugal pump of the type having an impeller, a sealing ring groove formed in a pump casing, and means for supplying flushing water to the sealing ring groove, comprising:(a) a radial seal having a sealing end, a water inlet end, and opposed sides and adapted for installation within the sealing ring groove, a cross-section of the radial seal being substantially rectangular, said radial seal having a plurality of openings formed therethrough for the passage of water; and (b) said plurality of openings so dimensioned and so located therethrough said radial seal that when water is supplied to the water inlet end, the water flows through the plurality of openings, wherein the radial seal automatically moves to a self-compensating balanced position between the pump casing and the impeller of the pump.