The Seal Ring,labyrinth,aircraft Gas, cataloged under National Stock Number 2840-00-768-2104, 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 3 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2840-00-768-2104 |
| Primary Part Number | 737534 |
| Item Name | Seal Ring,labyrinth,aircraft Gas |
| 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 | 5.490 INCHES MINIMUM AND 5.510 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 737534 | Paramount Machine Company, Inc. Dba Paramount Machine Co Inc (USA) |
| 737534 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 714166 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 737534 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 358381 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 737534 | 5/9 Secondary reference Union Machine Co of Lynn, Inc |
| 737534 | 5/9 Secondary reference U.S. Government activity |
| 737534 | 5/9 Secondary reference Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc |
| 737534 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 358381 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 737534 | 5/9 Secondary reference Palmer Manufacturing Co., Llc Dba Pursuit Aerospace |
| 737534 | 5/9 Secondary reference Ambel Precision Manufacturing Corporation |
| 737534 | 5/9 Secondary reference Pego Corp |
| 737534 | 5/9 Secondary reference Electro-Methods, L.p. |
| 714166 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 2840-00-768-2104 is a Seal Ring,labyrinth,aircraft Gas, 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 2840-00-768-2104 has 4 manufacturer part numbers on file: 737534 (Paramount Machine Company, Inc. Dba Paramount Machine Co Inc), 737534 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 714166 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 737534 (Rtx Corporation Div Pratt & Whitney).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-584-2019, 5330-01-683-7347. Verify interchangeability with system specifications before substitution.
Key specifications for 737534: Criticality Code Justification: AGAV; Diameter: 5.490 INCHES MINIMUM AND 5.510 INCHES MAXIMUM IN; Overall Length: 1.491 INCHES MINIMUM AND 1.493 INCHES MAXIMUM IN; Special Features: MATL AMS 6322 OR AMS 6323. 3 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 2840-00-768-2104 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.