NSN 2825-00-097-1657, 2825000971657
CARBON RING ASSEMBLY

Federal Supply Classification: FSC 2825 - Steam Turbines and Components
National Item Identification Number: NIIN 000971657
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 2825-00-097-1657

National Stock Number (NSN) 2825-00-097-1657, or NIIN 000971657, (carbon ring assembly) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). 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 4 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are 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 assigned to Item Name Code (INC) 77777. 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 2825000971657 contains an unknown precious metal.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) CARBON RING,33-P-18 GR.2;CARBON RING SPRING,CRES PER 22W-13 CONDITION H; CARBON RING CLAMP,STEEL PER MIL-S-853 CL.3 TYPE4;OUTSIDE DIA. RING 3.750 IN.;SPRING LENGTH 8.250 IN. FREE LENGTH;LENGTH OF CLAMP 1.000 IN.,LARGEST WIDTH 0.375 IN.