The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-00-799-7790, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-799-7790 |
| Primary Part Number | 394808 |
| 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 |
| Stage Number | 1 |
| Diameter | 17.355 INCHES NOMINAL IN |
| Engine Section Location | COMBUSTION CHAMBER |
| Material | NICKEL ALLOY OUTER CASE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
NSN 2840-00-799-7790 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 2840-00-799-7790 has 2 manufacturer part numbers on file: 394808 (Rtx Corporation Div Pratt & Whitney), 394808 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
2 possible matches (shared part number, not a government interchangeability claim): 2910-01-196-0895, 2920-01-197-7870. Verify interchangeability with system specifications before substitution.
Key specifications for 394808: Stage Number: 1; Diameter: 17.355 INCHES NOMINAL IN; Overall Length: 1.1050 INCHES NOMINAL IN; Engine Section Location: COMBUSTION CHAMBER. 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.
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.