Seal Ring, Labyrinth, Aircraft Gas2840-01-425-9646
NSN 2840-01-425-9646 · NIIN 014259646
FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components · FSG 28 — Engines, Turbines, and Components
Government record, cited
Also searched as2840-01-425-9646 ·
2840014259646 ·
NIIN 014259646 ·
01-425-9646 ·
FSC 2840 Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Nearby stock numbers← 2840-01-425-8027 Support, Accessory, Aircraft Gas T
·
2840-01-425-9745 Support, Accessory, Aircraft Gas T →
Features
Seal Ring,labyrinth,aircraft Gas — FSC 2840
Stage Number: 4
Engine Section Location: TURBINE
Material: STEEL CORROSION RESISTING OUTER CASE
Identification
NSN: 2840-01-425-9646
NIIN: 014259646
FSC: 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
FSG: 28 — Engines, Turbines, and Components
General Description
The Seal Ring,labyrinth,aircraft Gas, cataloged under National Stock Number 2840-01-425-9646, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2840-01-425-9646
Item Name
Seal Ring,labyrinth,aircraft Gas
FSC / FSG
2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Status
ACTIVE
Stage Number
4
Engine Section Location
TURBINE
Material
STEEL CORROSION RESISTING OUTER CASE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
3002530-1
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2840-00-000-0048
ENGINE,AIRCRAFT,TURBO-SHAFT
2840-00-000-0049
MODIFICATION KIT,ENGINE
2840-00-001-1741
CASE AND NOZZLE ASSEMBLY,TURBINE
2840-00-001-1743
2840-00-001-1743 · Item name not on file
2840-00-001-2117
2840-00-001-2117 · Item name not on file
2840-00-001-2284
2840-00-001-2284 · Item name not on file
2840-00-001-3922
2840-00-001-3922 · Item name not on file
2840-00-001-4903
SEAL,AIR,AIRCRAFT GAS TURBINE EN
Frequently Asked Questions
What is NSN 2840-01-425-9646?
NSN 2840-01-425-9646 is a Seal Ring,labyrinth,aircraft Gas, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
What are the specifications of 2840-01-425-9646?
Key specifications for 2840-01-425-9646: Stage Number: 4; Overall Length: 13.740 INCHES NOMINAL IN; Engine Section Location: TURBINE; Special Features: MATERIAL IS HOSTALLOY A HOT STEEL. THE CAGE CODE AND PART NUMBER ARE ETCHED ON THE OUTER RING. 3 specifications are documented in the U.S. Government catalog.
Is NSN 2840-01-425-9646 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.