PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

426521Seal,air,aircraft Gas Turbine En

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 2840-00-956-0174 · FSC 2840 · No Item Name Available
Verified by PartsTable
NSN 2840-00-956-0174 — this item is cataloged by the U.S. Government under National Stock Number 2840-00-956-0174. Primary manufacturer part number: 426521.
Features
  • Seal,air,aircraft Gas Turbine En — FSC 2840
  • 9 verified cross-references
  • Primary manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-00-956-0174, is classified within Federal Supply Class 2840 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeal,air,aircraft Gas Turbine En
FSC / FSG2840 — No Item Name Available (FSG 28)
ManufacturersHanwha Aerospace Usa Llc (CAGE 3JVG3); Enjet Aero Bloomfield, Llc (CAGE 31340); Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (CAGE 77445); Tokyo Judoi Kogyo K.k. (CAGE JA269); Agc Acquisition Llc Div Agc Acquisiton Llc (CAGE 98500)
Technical Specifications
ParameterValue
NSN2840-00-956-0174
Primary Part Number426521
Item NameSeal,air,aircraft Gas Turbine En
FSC / FSG2840 / 28 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-100-07883774 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
Cross-Reference Index
Part NumberManufacturer
426521 Hanwha Aerospace Usa Llc (USA)
426521 Enjet Aero Bloomfield, Llc (USA)
426521 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
426521 Tokyo Judoi Kogyo K.k. (JPN)
426521 Agc Acquisition Llc Div Agc Acquisiton Llc (USA)
426521 Electro-Methods, L.p. (USA)
426521 Mtu Aero Engine Components Inc (USA)
426521 Tokyo Judogi Kogyo Co. (JPN)
426521 Turbocombustor Technology, Inc. Dba Pursuit Aerospace (USA)
Related Parts
3110-00-100-0788INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3774

Frequently Asked Questions

What is NSN 2840-00-956-0174?

NSN 2840-00-956-0174 is a Seal,air,aircraft Gas Turbine En, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840 (No Item Name Available). Status: active.

What are the part numbers for NSN 2840-00-956-0174?

NSN 2840-00-956-0174 has 9 cross-referenced part numbers: 426521 (Hanwha Aerospace Usa Llc), 426521 (Enjet Aero Bloomfield, Llc), 426521 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 426521 (Tokyo Judoi Kogyo K.k.), 426521 (Agc Acquisition Llc Div Agc Acquisiton Llc) and 4 more.

What NSN replaces 2840-00-956-0174?

There is 1 known substitute for 2840-00-956-0174: 3110-00-100-0788. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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