National Stock Number
5330-00-542-3443
National Stock Number (NSN) 5330-00-542-3443, or NIIN 005423443, (seal,plain encased) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 25, 2008, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) 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 5330005423443 contains an unknown precious metal.
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 Jul 01, 2025.