The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-01-281-5366, 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 Div Pratt & Whitney. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-281-5366 |
| Primary Part Number | 2183840 |
| 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 Div Pratt & Whitney |
| Status | ACTIVE |
| Stage Number | 14 |
| Material Document and Classification | AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 15.998 INCHES MINIMUM AND 16.002 INCHES MAXIMUM IN |
| Engine Section Location | COMPRESSOR |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 2183840 | Hanwha Aerospace Usa Llc (USA) |
| 2183840 | Hanwha Aerospace Usa Llc (USA) |
| 2183840 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 2183840 | Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc (USA) |
| Reference | Meaning |
|---|---|
| 2183840 | 5/9 Secondary reference Mtu Aero Engine Components Inc |
| 2183840 | 5/9 Secondary reference American Welding and Mfg Co the |
| 2183840 | 5/9 Secondary reference Stowe Machine Co., Inc. |
NSN 2840-01-281-5366 is a Seal,air,aircraft Gas Turbine En, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-281-5366 has 4 manufacturer part numbers on file: 2183840 (Hanwha Aerospace Usa Llc), 2183840 (Hanwha Aerospace Usa Llc), 2183840 (Rtx Corporation Div Pratt & Whitney), 2183840 (Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc).
1 possible match (shared part number, not a government interchangeability claim): 6620-01-533-8251. Verify interchangeability with system specifications before substitution.
Key specifications for 2183840: Stage Number: 14; Material Document and Classification: AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Diameter: 15.998 INCHES MINIMUM AND 16.002 INCHES MAXIMUM IN; Overall Length: 0.870 INCHES NOMINAL 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.