The Turbine Rotor Seal, cataloged under National Stock Number 2840-00-755-7444, 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 1 specification, 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-755-7444 |
| Primary Part Number | 457945 |
| Item Name | Turbine Rotor Seal |
| 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 |
| General Characteristics Item Description | NICKEL ALLOY; 0.640 IN. TO 0.660 IN. LG; 0.401 IN. TO 0.411 IN. DIA,12 HOLES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 457945 | Drt Aerospace, Llc (USA) |
| 457945 | Electro-Methods, L.p. (USA) |
| 457945 | Demusz Mfg. Co., Inc. (USA) |
| 457945 | Union Machine Co of Lynn, Inc (USA) |
| 457945 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 457945 | 5/9 Secondary reference Barnes Group Inc. Div Windsor Division |
| 457945 | 5/9 Secondary reference Hanwha Aerospace Usa Llc Div Edac Nd, Inc. |
| 457945 | 5/9 Secondary reference Ashland Electric Products Inc |
| 457945 | 5/9 Secondary reference Motorola Canada Ltd |
| 457945 | 5/9 Secondary reference Precision Machine Products |
| 457945 | 5/9 Secondary reference West Coast Chain Mfg. Co. Dba Key-Bak |
| 457945 | 5/9 Secondary reference Stowe Machine Co., Inc. |
| 457945 | 5/9 Secondary reference Unison Engine Components Inc |
| 457945 | 5/9 Secondary reference Gmi Precision Corp Div of Dexter Tool Co |
| 457945 | 5/9 Secondary reference Columbia Manufacturing, Inc |
NSN 2840-00-755-7444 is a Turbine Rotor Seal, 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 2840-00-755-7444 has 5 manufacturer part numbers on file: 457945 (Drt Aerospace, Llc), 457945 (Electro-Methods, L.p.), 457945 (Demusz Mfg. Co., Inc.), 457945 (Union Machine Co of Lynn, Inc), 457945 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 457945: General Characteristics Item Description: NICKEL ALLOY; 0.640 IN. TO 0.660 IN. LG; 0.401 IN. TO 0.411 IN. DIA,12 HOLES IN. 1 specification is 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 2840-00-755-7444 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.