National Stock Number (NSN) 2840-00-043-1964, or NIIN 000431964, (seal,air,aircraft gas turbine en) was assigned November 17, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Mar 15, 2011. There have been 2 contracts issued for this part number, with 7 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM40003D9404, SPM40003D9404, SPM40003D9404, SPM40003D9404, SPM40000D9403. The total value of the awarded contracts has been US$ 1,892,511.03.
This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2017, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 50595. [A RIGID METALLIC ITEM, GENERALLY CIRCULAR. IT MAY BE FORMED OF SEGMENTED ARCS. IT IS DESIGNED TO PREVENT LEAKAGE OF AIR IN AN ENGINE, GAS TURBINE, AIRCRAFT. IT MAY BE OF VARIOUS CROSS-SECTIONAL SHAPES. IT MAY HAVE MOUNTING FACILITIES. IT MAY ACT AS A SPACER BUT ITS PRIMARY FUNCTION IS AS AN AIR SEAL.]. This item is a Flight Safety Critical Aircraft Part (FSCAP). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840000431964 does not contain precious metals.
This NSN is associated to Schedule B 8411997050: parts of gas turbine aircraft engines, other than for use in civil aircraft. The Schedule B End Use is listed as engines and turbines for military aircraft. NAICS classification category 336412: aircraft engine and engine parts manufacturing.
This information was last updated on Jul 01, 2025.