The Seal,metallic,aircraft Gas Turbi, cataloged under National Stock Number 2840-01-387-9366, 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 General Electric Company. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-387-9366 |
| Primary Part Number | 1668M40G03 |
| Item Name | Seal,metallic,aircraft Gas Turbi |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Design Type | AXIAL COMPRESSOR |
| Criticality Code Justification | ABHP AND ABMZ AND FEAT |
| Diameter | 21.510 INCHES MINIMUM AND 21.520 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 | F |
| Part Number | Manufacturer |
|---|---|
| 1668M40G03 | Electro-Methods, L.p. (USA) |
| 1668M40G03 | Metro Machine Works Inc (USA) |
| 1668M40G03 PRIMARY | General Electric Company (USA) |
| 1668M40G03 | Twigg Corp (USA) |
| 1668M40G03 | Union Machine Co of Lynn, Inc (USA) |
| 1668M40G03 | Unison Engine Components Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1668M40 | D/9 Drawing number reference only General Electric Company |
NSN 2840-01-387-9366 is a Seal,metallic,aircraft Gas Turbi, manufactured by General Electric Company, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-387-9366 has 6 manufacturer part numbers on file: 1668M40G03 (Electro-Methods, L.p.), 1668M40G03 (Metro Machine Works Inc), 1668M40G03 (General Electric Company), 1668M40G03 (Twigg Corp), 1668M40G03 (Union Machine Co of Lynn, Inc) and 1 more.
Key specifications for 1668M40G03: Design Type: AXIAL COMPRESSOR; Criticality Code Justification: ABHP AND ABMZ AND FEAT; Diameter: 21.510 INCHES MINIMUM AND 21.520 INCHES MAXIMUM IN; Overall Length: 0.705 INCHES MINIMUM AND 0.715 INCHES MAXIMUM IN. 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.