National Stock Number
2840-01-301-8857
National Stock Number (NSN) 2840-01-301-8857, or NIIN 013018857, (seal ring,metal) has an unknown assigned date. NIIN 013018857 was cancelled on September 2, 1993, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5330007531064. 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) 21205. [A CIRCULAR SHAPED ITEM DESIGNED TO BE INSTALLED IN A SPECIALLY PREPARED GROOVE OR COUNTERBORE TO PROVIDE A LOW PRESSURE SEAL. IT MAY BE SUPPLIED IN VARIOUS CROSS-SECTIONAL SHAPES. IT MAY BE SOLID OR CUT THROUGH TO ALLOW FOR INSTALLATION AND FITTING. EXCLUDES ITEMS WHOSE PRIMARY FUNCTION IS TO PROVIDE SEALING, WIPING, OR WEARING SURFACE CAPABILITIES FOR PISTON CONFIGURATIONS. SEE ALSO RING,PISTON AND RING,WIPER.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840013018857 does not contain precious metals.
This information was last updated on May 01, 2025.