The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-00-227-8889, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-227-8889 |
| Primary Part Number | 555665 |
| Item Name | Seal,air,aircraft Gas Turbine En |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Stage Number | 10 |
| Design Type | AXIAL COMPRESSOR |
| Hardness Rating | 30.0 ROCKWELL C NOMINAL OVERALL |
| Criticality Code Justification | CZBJ AND SFTT AND ABMZ AND ABHP AND FEAT |
| Diameter | 24.900 INCHES NOMINAL IN |
| Engine Section Location | COMPRESSOR |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 555665 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 309770 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 555665 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 2840-00-227-8889 is a Seal,air,aircraft Gas Turbine En, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-227-8889 has 1 manufacturer part number on file: 555665 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 555665: Surface Treatment Document and Classification: AMS2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Stage Number: 10; Design Type: AXIAL COMPRESSOR; Hardness Rating: 30.0 ROCKWELL C NOMINAL OVERALL. 9 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.
NSN 2840-00-227-8889 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.