National Stock Number (NSN) 2840-01-100-1680, or NIIN 011001680, (seal,air,aircraft gas turbine en) was assigned August 29, 1980 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 7 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 5 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 18 contracts issued for this part number, with 44 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE4A724F004V, SPE4A724F8111, SPE4A724F8111, SPE4A724F8111, SPE4A724F8111. The total value of the awarded contracts has been US$ 2,910,920.02.
This NSN is fairly common among different weapons systems, belonging to 20 different platforms.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. 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 2840011001680 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 May 01, 2025.