The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-01-321-4458, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-01-321-4458 |
| Primary Part Number | 4075338 |
| 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 | 2 |
| Design Type | AXIAL COMPRESSOR |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 21.040 INCHES NOMINAL IN |
| Engine Section Location | COMPRESSOR |
| Material Thickness | 0.060 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 4075338 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 2840-01-321-4458 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 2840-01-321-4458 has 1 manufacturer part number on file: 4075338 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4075338: Stage Number: 2; Design Type: AXIAL COMPRESSOR; Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL; Criticality Code Justification: AGAV. 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 2840-01-321-4458 has DEMIL Code D. 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.