National Stock Number
4320-00-541-1570
National Stock Number (NSN) 4320-00-541-1570, or NIIN 005411570, (ring,wearing) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005411570 was cancelled on June 2, 1997, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4320014342532. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 22534. [A CYLINDRICAL ITEM WITH OR WITHOUT FLANGE(S), DESIGNED TO BE INSERTED IN A PUMP CASING OR SECURED TO THE IMPELLER OF A CENTRIFUGAL PUMP. IT IS USED FOR THE PURPOSE OF PROVIDING A CLOSE RUNNING CLEARANCE BETWEEN THE IMPELLER AND CASING IN ORDER TO PREVENT OR OVERCOME LEAKAGE DUE TO EROSION. IT MAY ALSO BE USED AS A DIFFUSER RING IN THE SUCTION AND DISCHARGE THROATS OF VALVES.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4320005411570 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.