PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

475426Seal,air,aircraft Gas Turbine En

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 2840-00-066-9898 · FSC 2840 · No Item Name Available
Verified by PartsTable
NSN 2840-00-066-9898 — this item is cataloged by the U.S. Government under National Stock Number 2840-00-066-9898. Primary manufacturer part number: 475426.
Features
  • Seal,air,aircraft Gas Turbine En — FSC 2840
  • Engine Section Location: TURBINE
  • Criticality Code Justification: AGAV
  • Diameter: 13.182 INCHES MINIMUM AND 13.192 INCHES MAXIMUM IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Stage Number: 2
  • 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
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seal,air,aircraft Gas Turbine En, cataloged under National Stock Number 2840-00-066-9898, 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. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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.

Technical Specifications
ParameterValue
NSN2840-00-066-9898
Primary Part Number475426
Item NameSeal,air,aircraft Gas Turbine En
FSC / FSG2840 / 28 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Engine Section LocationTURBINE
Criticality Code JustificationAGAV
Diameter13.182 INCHES MINIMUM AND 13.192 INCHES MAXIMUM IN
MaterialSTEEL CORROSION RESISTING OVERALL
Stage Number2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5961-00-491-72772N1890 INTERCHANGEABLE
Transistor
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
475426 United Engineering and Mfg Co Inc (USA)
475426 Electro-Methods, L.p. (USA)
475426 Beacon Industries, Inc. Dba Beacon Technology Co (USA)
475426 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
475426 Hansen Engineering and Machinery Co., Inc. Div Hansen Engineering & Machinery Co., Inc. (USA)
475426 Rtx Corporation Div Pratt & Whitney (USA)
475426 American Welding and Mfg Co the (USA)
475426 Demusz Mfg. Co., Inc. (USA)
475426 Kerns Manufacturing Corp. Dba Kerns Manufacturing Corp (USA)
Related Parts
5961-00-491-7277INTERCHANGEABLE
TRANSISTOR
2N1890

Frequently Asked Questions

What is NSN 2840-00-066-9898?

NSN 2840-00-066-9898 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 2840-00-066-9898?

NSN 2840-00-066-9898 has 9 cross-referenced part numbers: 475426 (United Engineering and Mfg Co Inc), 475426 (Electro-Methods, L.p.), 475426 (Beacon Industries, Inc. Dba Beacon Technology Co), 475426 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 475426 (Hansen Engineering and Machinery Co., Inc. Div Hansen Engineering & Machinery Co., Inc.) and 4 more.

What NSN replaces 2840-00-066-9898?

There is 1 known substitute for 2840-00-066-9898: 5961-00-491-7277. Verify interchangeability with system specifications before substitution.

What are the specifications of 475426?

Key specifications for 475426: Engine Section Location: TURBINE; Overall Width: 1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN; Criticality Code Justification: AGAV; Diameter: 13.182 INCHES MINIMUM AND 13.192 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

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