PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1778673Seal,plain Encased

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5330-00-611-8526 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-611-8526 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-611-8526. Primary manufacturer part number: 1778673.
Features
  • Seal,plain Encased — FSC 5330
  • Case Style: SQUARE
  • Seal Width: 0.547 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN
  • Accommodated Shaft Diameter: 2.031 INCHES NOMINAL IN
  • Housing Bore Diameter: 2.753 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-611-8526, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5330-00-611-8526
Primary Part Number1778673
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Case StyleSQUARE
Seal Width0.547 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN
Accommodated Shaft Diameter2.031 INCHES NOMINAL IN
Housing Bore Diameter2.753 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6695-00-121-0896202005-168 INTERCHANGEABLE
Indicator,symbol Indicating
Jewell Instruments Llc
Cross-Reference Index
Part NumberManufacturer
1778673 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
6695-00-121-0896INTERCHANGEABLE
INDICATOR,SYMBOL INDICATING
202005-168

Frequently Asked Questions

What is NSN 5330-00-611-8526?

NSN 5330-00-611-8526 is a Seal,plain Encased, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-611-8526?

NSN 5330-00-611-8526 has 1 cross-referenced part number: 1778673 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5330-00-611-8526?

There is 1 known substitute for 5330-00-611-8526: 6695-00-121-0896. Verify interchangeability with system specifications before substitution.

What are the specifications of 1778673?

Key specifications for 1778673: Case Style: SQUARE; Seal Width: 0.547 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN; Accommodated Shaft Diameter: 2.031 INCHES NOMINAL IN; Housing Bore Diameter: 2.753 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN. 4 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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