National Stock Number
2825-01-334-3578
National Stock Number (NSN) 2825-01-334-3578, or NIIN 013343578, (seal ring assembly,labyrinth) was assigned February 21, 1991 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 5330013523101.
There are 3 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier 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.
This NSN is unique to one weapons system.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 02, 2005, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. Master or coordinated tooling is required to produce this part. This tooling is not owned by the Government or, where owned, cannot be made available to other sources. Valid AMCs: 1, 2, 3, 4, and 5.
This NSN is assigned to Item Name Code (INC) 38077. [A SPECIFICALLY DESIGNED AND TESTED ITEM NORMALLY DIVIDED INTO TWO OR MORE PIECES WITH MATCHED ENDS FOR PRECISION INSTALLATION. IT FORMS A TIGHT SEAL AROUND A STEAM TURBINE SHAFT. INCLUDES ITEMS SUCH AS SEAL RINGS, TURBINE RINGS, SPRINGS, PINS, AND THE LIKE. EXCLUDES:PACKING ASSEMBLY; SEAL RING, METAL.]. This item does not have a nuclear hardened feature or any other critical feature 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 2825013343578 contains an unknown precious metal.
This NSN is associated to Schedule B 8406900040: parts for steam turbines. The Schedule B End Use is listed as industrial engines. NAICS classification category 333611: turbine and turbine generator set units manufacturing.
This information was last updated on Jul 01, 2025.