National Stock Number
4320-01-283-1906
National Stock Number (NSN) 4320-01-283-1906, or NIIN 012831906, (ring,wearing) was assigned July 30, 1988 in the Federal Logistics Information System (FLIS). NIIN 012831906 was cancelled on October 2, 1997, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4320014369213. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to 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 4320012831906 does not contain precious metals.
This information was last updated on Jul 01, 2025.