The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-00-800-3963, 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 4 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through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-800-3963 |
| Primary Part Number | 729581 |
| 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 |
| Criticality Code Justification | AGAV |
| Diameter | 20.336 INCHES MINIMUM AND 20.346 INCHES MAXIMUM IN |
| Engine Section Location | COMPRESSOR |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 729581 | Columbia Manufacturing, Inc (USA) |
| 729581 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 729581 | Rtx Corporation Div Pratt & Whitney (USA) |
| 729581 | Demusz Mfg. Co., Inc. (USA) |
| 729581 | Union Machine Co of Lynn, Inc (USA) |
| Reference | Meaning |
|---|---|
| 729581 | 5/9 Secondary reference U.S. Government activity |
| 729581 | 5/9 Secondary reference Lewis Machine, Llc |
| 729581 | 5/9 Secondary reference Dover Tool of Connecticut, Llc Div Na |
| 729581 | 5/9 Secondary reference Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc |
| 729581 | 5/9 Secondary reference Paramount Machine Company, Inc. Dba Paramount Machine Co Inc |
| 729581 | 5/9 Secondary reference Ambel Precision Manufacturing Corporation |
| 729581 | 5/9 Secondary reference Bogue Executive Enterprises Inc Dba/dexter Tool Co |
| 729581 | 5/9 Secondary reference Stowe Machine Co., Inc. |
| 729581 | 5/9 Secondary reference Electro-Methods, L.p. |
| 729581 | 5/9 Secondary reference Jet Industries, Inc. Dba Jet Industries Inc |
| 729581 | 5/9 Secondary reference Beacon Industries, Inc. Dba Beacon Technology Co |
| 729581 | 5/9 Secondary reference Starwin Industries, Llc |
| 729581 | 5/9 Secondary reference Hanwha Aerospace Usa Llc |
| 433955 | 5/1 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 2840-00-800-3963 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 2840-00-800-3963 has 5 manufacturer part numbers on file: 729581 (Columbia Manufacturing, Inc), 729581 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 729581 (Rtx Corporation Div Pratt & Whitney), 729581 (Demusz Mfg. Co., Inc.), 729581 (Union Machine Co of Lynn, Inc).
Key specifications for 729581: Criticality Code Justification: AGAV; Diameter: 20.336 INCHES MINIMUM AND 20.346 INCHES MAXIMUM IN; Overall Length: 0.810 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN; Engine Section Location: COMPRESSOR. 4 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 2840-00-800-3963 has DEMIL Code Q. 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.