National Stock Number
5331-01-238-1641
National Stock Number (NSN) 5331-01-238-1641, or NIIN 012381641, (o-ring) was assigned August 12, 1986 in the Federal Logistics Information System (FLIS). NIIN 012381641 was cancelled on July 2, 2002, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5331001085691. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has a strong supply network for this NSN, with 20 sources of supply.
This part number has not been procured by the US Government in over 5 years.
This NSN is unique to one weapons system.
This NSN is assigned to Item Name Code (INC) 47946. [A NONMETALLIC CIRCULAR ITEM WITH AN APERATURE, HAVING A SOLID ROUND CROSS-SECTION. THEY ARE USED PRIMARILY FOR SEALING. FOR ITEMS WITH OTHER THAN ROUND CROSS SECTION, SEE PACKING,PREFORMED. FOR NONCIRCULAR ITEMS WITH A ROUND CROSS-SECTION, SEE SEAL,NONMETALLIC ROUND SECTION AND RUBBER,ROUND SECTION.]. This item has critical features such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5331012381641 does not contain precious metals.
This information was last updated on May 01, 2025.