The Ring,piston, cataloged under National Stock Number 2825-00-555-2126, is classified within Federal Supply Class 2825 (Steam Turbines and Components) of the Engines, Turbines, and Components group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2825-00-555-2126 |
| Item Name | Ring,piston |
| FSC / FSG | 2825 / 28 — Steam Turbines and Components |
| Status | ACTIVE |
| FSC Application Data | TURBINE,STEAM |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Radial Wall Thickness | 0.3120 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 9.000 INCHES IN |
| Material | COPPER ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| S543PC12 | 5/9 Secondary reference U.S. Government activity |
| S-384-12 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| S543-12 | 5/9 Secondary reference U.S. Government activity |
| S384PC12 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2825-00-555-2126 is a Ring,piston, classified under FSC 2825, Steam Turbines and Components. Status: active.
Key specifications for 2825-00-555-2126: FSC Application Data: TURBINE,STEAM; Overall Width: 0.3120 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Radial Wall Thickness: 0.3120 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.