National Stock Number
2840-00-777-0771
National Stock Number (NSN) 2840-00-777-0771, or NIIN 007770771, (seal ring,labyrinth,aircraft gas turbine engine) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). NIIN 007770771 was cancelled on June 2, 1998, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 2840008770061. 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) 50599. [AN ITEM OF SINGLE PIECE METAL KNIFE EDGED CONSTRUCTION USED TO FORM A TIGHT AIR SEAL. IT IS MOUNTED ON A ROTATING PORTION OF THE ENGINE. IT MAY BE USED IN CONJUNCTION WITH OTHER SEALS TO PREVENT OIL SEEPAGE.]. This item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840007770771 does not contain precious metals.
This information was last updated on Aug 01, 2025.