The Ring,piston, cataloged under National Stock Number 2825-00-273-0618, is classified within Federal Supply Class 2825 (Steam Turbines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2825-00-273-0618 |
| Primary Part Number | 25J749PC7 |
| Item Name | Ring,piston |
| FSC / FSG | 2825 / 28 — Steam Turbines and Components |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| FSC Application Data | TURBINE,STEAM |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | DIAGONAL JOINT |
| Radial Wall Thickness | 0.1550 INCHES MINIMUM AND 0.1750 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 4.000 INCHES IN |
| Material | IRON OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 25J749PC7 | Westinghouse Electric Corp (USA) |
| 26J243PC41 | Westinghouse Electric Corp (USA) |
| 1389661 | Westinghouse Electric Corp (USA) |
| 26J52PC98 | Westinghouse Electric Corp (USA) |
| 26J81PC41 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 26J243PC41 | 5/2 Secondary reference U.S. Government activity |
| 1389661 | 5/2 Secondary reference U.S. Government activity |
| 26J52PC98 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 26J81PC41 | 5/2 Secondary reference U.S. Government activity |
| 1389661 | 3/9 Design control — primary reference Westinghouse Electric Corp Control Business Unit |
| 26J243PC41 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J749PC7 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 26J81PC41 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
NSN 2825-00-273-0618 is a Ring,piston, manufactured by Westinghouse Electric Corp, classified under FSC 2825, Steam Turbines and Components. Status: active.
NSN 2825-00-273-0618 has 5 manufacturer part numbers on file: 25J749PC7 (Westinghouse Electric Corp), 26J243PC41 (Westinghouse Electric Corp), 1389661 (Westinghouse Electric Corp), 26J52PC98 (Westinghouse Electric Corp), 26J81PC41 (Westinghouse Electric Corp).
Key specifications for 25J749PC7: FSC Application Data: TURBINE,STEAM; Overall Width: 0.2480 INCHES MINIMUM AND 0.2490 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: DIAGONAL JOINT. 7 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.