The Seal Ring Assembly,labyrinth, cataloged under National Stock Number 2825-01-475-3744, is classified within Federal Supply Class 2825 (Steam Turbines and Components) of the Engines, Turbines, and Components group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2825-01-475-3744 |
| Item Name | Seal Ring Assembly,labyrinth |
| FSC / FSG | 2825 / 28 — Steam Turbines and Components |
| Status | ACTIVE |
| Outside Diameter | 18.567 INCHES MAXIMUM18.567 INCHES MAXIMUM IN |
| Supplementary Features | USED AS LOW PRESSURE TURBINE SEAL |
| Inside Diameter | 16.642 INCHES MAXIMUM16.642 INCHES MAXIMUM IN |
| Height | 0.568 INCHES MINIMUM AND 0.568 INCHES MINIMUM AND 0.575 INCHES MAXIMUM0.575 INCHES MAXIMUM IN |
| Material | NICKEL 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 |
|---|---|
| 2D64020-001 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 2D64020-001 | 3/2 Design control — primary reference U.S. Government activity |
| 2D64020 | D/9 Drawing number reference only U.S. Government activity |
NSN 2825-01-475-3744 is a Seal Ring Assembly,labyrinth, classified under FSC 2825, Steam Turbines and Components. Status: active.
Key specifications for 2825-01-475-3744: Outside Diameter: 18.567 INCHES MAXIMUM18.567 INCHES MAXIMUM IN; Supplementary Features: USED AS LOW PRESSURE TURBINE SEAL; Inside Diameter: 16.642 INCHES MAXIMUM16.642 INCHES MAXIMUM IN; Height: 0.568 INCHES MINIMUM AND 0.568 INCHES MINIMUM AND 0.575 INCHES MAXIMUM0.575 INCHES MAXIMUM IN. 5 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.