PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

65821BGasket

Griswold Industries Dba Cla-Val Co · NSN 5330-00-005-6225 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-005-6225 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-005-6225. Primary manufacturer part number: 65821B.
Features
  • Gasket — FSC 5330
  • Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
  • Hardness Rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
  • Hole Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Style Designator: CIRCULAR
  • Bolt Circle Diameter: 5.500 INCHES NOMINAL IN
  • Outside Diameter: 6.250 INCHES NOMINAL IN
  • Material Document and Classification: ASTM D2000 2BC710 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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 5330-00-005-6225, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5330-00-005-6225
Primary Part Number65821B
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusACTIVE
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Hardness Rating65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
Hole Diameter0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Style DesignatorCIRCULAR
Bolt Circle Diameter5.500 INCHES NOMINAL IN
Outside Diameter6.250 INCHES NOMINAL IN
Material Document and ClassificationASTM D2000 2BC710 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Aperture Diameter4.625 INCHES NOMINAL IN
Cross-Sectional Thickness0.030 INCHES NOMINAL IN
Bolt Hole Quantity8
MaterialRUBBER CHLOROPRENE CLASS CR OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-366-224380741 INTERCHANGEABLE
Gasket
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
4610-01-261-070080741 INTERCHANGEABLE
Filter Element,reverse Osmosis
Filmtec Corp
Cross-Reference Index
Part NumberManufacturer
80741 Griswold Industries Dba Cla-Val Co (USA)
65821B PRIMARY Griswold Industries Dba Cla-Val Co (USA)
Related Parts
5330-00-366-2243INTERCHANGEABLE
GASKET
80741
4610-01-261-0700INTERCHANGEABLE
FILTER ELEMENT,REVERSE OSMOSIS
80741

Frequently Asked Questions

What is NSN 5330-00-005-6225?

NSN 5330-00-005-6225 is a Gasket, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-005-6225?

NSN 5330-00-005-6225 has 2 cross-referenced part numbers: 80741 (Griswold Industries Dba Cla-Val Co), 65821B (Griswold Industries Dba Cla-Val Co).

What NSN replaces 5330-00-005-6225?

There are 2 known substitutes for 5330-00-005-6225: 5330-00-366-2243, 4610-01-261-0700. Verify interchangeability with system specifications before substitution.

What are the specifications of 65821B?

Key specifications for 65821B: Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Hardness Rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL; Hole Diameter: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Style Designator: CIRCULAR. 12 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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