National Stock Number (NSN) 5330-01-203-6551, or NIIN 012036551, (seal,plain encased) was assigned March 17, 1985 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 2 stock numbers: 5330014143108, 5330011748615.
There are 8 manufacturer part numbers associated with this NSN. 6 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 11 suppliers. Today, 9 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts. ISO Group has built a very strong supply chain for this NSN. We have direct relationships with 34 sources of supply.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Jun 22, 2018. There have been 5 contracts issued for this part number, with 7 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: SPE5EM18P1475, SPE5EM17C0013, SPE5EM17P0795, SPE5EM17P0795, SPE5EJ15M1245. The total value of the awarded contracts has been US$ 1,169,337.80.
This NSN is very common among different weapons systems, belonging to 36 different platforms.
This national stock number is in high demand. Globally, demand for this NSN has originated from 15 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Feb 17, 2017, 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) 04214. [A PLIABLE RUBBER, FELT, LEATHER, OR COMPOSITION RING-SHAPED ELEMENT, SPLIT OR SOLID; WITH OR WITHOUT SPRING OR SPREADER, HAVING A METAL SHELL ON ALL OR A PORTION OF AT LEAST TWO OF THE OUTER SURFACES. IT MAY BE DESIGNED TO BE EITHER BOLT MOUNTED OR PRESSMOUNTED BETWEEN FIXED AND MOVEABLE PARTS TO FORM A TIGHT AND EFFECTIVE SEAL BY THE PRESSURE OF THE SPRING OR SPREADER OR THE RESILIENCY INHERENT IN THE ELEMENT MATERIAL. EXCLUDES:PACKING WITH RETAINER.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5330012036551 does not contain precious metals.
This NSN is associated to Schedule B 8484200000: mechanical seals. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 339991: gasket, packing, and sealing device manufacturing.
This information was last updated on Jun 01, 2025.