PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

655631Gasket

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5330-00-228-6568 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-228-6568 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-228-6568. Primary manufacturer part number: 655631.
Features
  • Gasket — FSC 5330
  • Bolt Circle Diameter: 2.437 INCHES NOMINAL IN
  • Outside Diameter: 2.859 INCHES MINIMUM AND 2.891 INCHES MAXIMUM IN
  • Material Document and Classification: ASTM D2000,2BC620ABE3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: RUBBER CHLOROPRENE CLASS CR OVERALL
  • Bolt Hole Quantity: 6
  • Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN
  • Style Designator: CIRCULAR
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Chloroprene Class Cr Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-228-6568, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-228-6568
Primary Part Number655631
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Bolt Circle Diameter2.437 INCHES NOMINAL IN
Outside Diameter2.859 INCHES MINIMUM AND 2.891 INCHES MAXIMUM IN
Material Document and ClassificationASTM D2000,2BC620ABE3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialRUBBER CHLOROPRENE CLASS CR OVERALL
Bolt Hole Quantity6
Cross-Sectional Thickness0.031 INCHES NOMINAL IN
Style DesignatorCIRCULAR
Hole Diameter0.187 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Hardness Rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
Aperture Diameter2.046 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5995-00-869-13916528 INTERCHANGEABLE
Cable Assembly
Unison Industries Llc
5995-01-530-8020655631 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
MILR3065 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
231572 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
655631 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5995-00-869-1391INTERCHANGEABLE
CABLE ASSEMBLY
6528
5995-01-530-8020INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
655631

Frequently Asked Questions

What is NSN 5330-00-228-6568?

NSN 5330-00-228-6568 is a Gasket, 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 5330-00-228-6568?

NSN 5330-00-228-6568 has 3 cross-referenced part numbers: MILR3065 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 231572 (Lockheed Martin Corporation Div Rms - Mitchel Field), 655631 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5330-00-228-6568?

There are 2 known substitutes for 5330-00-228-6568: 5995-00-869-1391, 5995-01-530-8020. Verify interchangeability with system specifications before substitution.

What are the specifications of 655631?

Key specifications for 655631: Bolt Circle Diameter: 2.437 INCHES NOMINAL IN; Outside Diameter: 2.859 INCHES MINIMUM AND 2.891 INCHES MAXIMUM IN; Material Document and Classification: ASTM D2000,2BC620ABE3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: RUBBER CHLOROPRENE CLASS CR OVERALL. 11 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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