PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55025Gasket

Flowserve Inc · NSN 5330-01-537-6646 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-537-6646 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-537-6646. Primary manufacturer part number: 55025.
Features
  • Gasket — FSC 5330
  • Cross-Sectional Thickness: 1.250 INCHES NOMINAL IN
  • Aperture Diameter: 1.940 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
  • Outside Diameter: 2.690 INCHES NOMINAL IN
  • Material: GRAPHITE OVERALL
  • Style Designator: CIRCULAR
  • 2 verified cross-references
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Graphite Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-01-537-6646, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 6 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-01-537-6646
Primary Part Number55025
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerFlowserve Inc
StatusCANCELLED
Cross-Sectional Thickness1.250 INCHES NOMINAL IN
Aperture Diameter1.940 INCHES NOMINAL IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Outside Diameter2.690 INCHES NOMINAL IN
MaterialGRAPHITE OVERALL
Style DesignatorCIRCULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
3120-00-083-83675502-5 INTERCHANGEABLE
Bushing,sleeve
Goodrich Aerospace Canada Ltd
4730-00-266-0538SAE J513 6-4 010102BA INTERCHANGEABLE
Adapter,straight,pipe to Tube
Sae International Dba Sae International
5975-00-280-9221 INTERCHANGEABLE
Elbow,electrical Conduit
5935-00-501-8025UG-999A/U INTERCHANGEABLE
Adapter,connector
Joint Electronics Type Designation System
5330-00-641-31221B4868 INTERCHANGEABLE
Seal,plain Encased
Caterpillar Inc Div Caterpillar Defense
4820-00-765-7994 INTERCHANGEABLE
Valve,check
5620-00-982-8182 INTERCHANGEABLE
Glass,sheet
5360-00-998-488155025 INTERCHANGEABLE
Spring,helical,compression
Avox Systems Inc Dba Avox Systems Inc
5133-01-068-4027 INTERCHANGEABLE
Drill,twist
4210-01-149-100355025 INTERCHANGEABLE
Time Delay,fire Ext
Tyco Fire Products Lp
Cross-Reference Index
Part NumberManufacturer
40407-2 ITEM 6 Flowserve Inc (USA)
55025 PRIMARY Flowserve Inc (USA)
Related Parts
3120-00-083-8367INTERCHANGEABLE
BUSHING,SLEEVE
5502-5
4730-00-266-0538INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
SAE J513 6-4 010102BA
5975-00-280-9221INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
5935-00-501-8025INTERCHANGEABLE
ADAPTER,CONNECTOR
UG-999A/U
5330-00-641-3122INTERCHANGEABLE
SEAL,PLAIN ENCASED
1B4868
4820-00-765-7994INTERCHANGEABLE
VALVE,CHECK
5620-00-982-8182INTERCHANGEABLE
GLASS,SHEET
5360-00-998-4881INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
55025
5133-01-068-4027INTERCHANGEABLE
DRILL,TWIST
4210-01-149-1003INTERCHANGEABLE
TIME DELAY,FIRE EXT
55025
5315-01-205-2987INTERCHANGEABLE
KEY,MACHINE
55025

Frequently Asked Questions

What is NSN 5330-01-537-6646?

NSN 5330-01-537-6646 is a Gasket, manufactured by Flowserve Inc, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-01-537-6646?

NSN 5330-01-537-6646 has 2 cross-referenced part numbers: 40407-2 ITEM 6 (Flowserve Inc), 55025 (Flowserve Inc).

What NSN replaces 5330-01-537-6646?

There are 11 known substitutes for 5330-01-537-6646: 3120-00-083-8367, 4730-00-266-0538, 5975-00-280-9221 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55025?

Key specifications for 55025: Cross-Sectional Thickness: 1.250 INCHES NOMINAL IN; End Item Identification: GATE VALVE 1.50IN IN; Aperture Diameter: 1.940 INCHES NOMINAL IN; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-01-537-6646 still in active supply?

NSN 5330-01-537-6646 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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