PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30521O-Ring

Blissfield Manufacturing Company · NSN 5331-01-412-9732 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-412-9732 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-412-9732. Primary manufacturer part number: 30521.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Blissfield Manufacturing Company
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-412-9732, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Blissfield Manufacturing Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersBlissfield Manufacturing Company (CAGE 93480)
Technical Specifications
ParameterValue
NSN5331-01-412-9732
Primary Part Number30521
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerBlissfield Manufacturing Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-013-771800192481 INTERCHANGEABLE
Nut,self-Locking,hexagon
Rolls-Royce Solutions America Inc
5360-00-292-11293182991 PC 68 INTERCHANGEABLE
Spring,helical,compression
Naval Sea Systems Command
5310-00-385-546330521 INTERCHANGEABLE
Washer,concave
United Technologies Corp Hamilton Sundstrand Corp
6150-00-426-1969 INTERCHANGEABLE
Lead,electrical
5998-01-118-3624 INTERCHANGEABLE
Circuit Card Assembly
5940-01-374-836312419928-003 INTERCHANGEABLE
Terminal,quick Disconnect
Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc
5305-01-599-260630521 INTERCHANGEABLE
Screw,cap,hexagon Head
Eagle Components, Inc
Cross-Reference Index
Part NumberManufacturer
30521 PRIMARY Blissfield Manufacturing Company (USA)
Related Parts
5310-00-013-7718INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
00192481
5360-00-292-1129INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
3182991 PC 68
5310-00-385-5463INTERCHANGEABLE
WASHER,CONCAVE
30521
6150-00-426-1969INTERCHANGEABLE
LEAD,ELECTRICAL
5998-01-118-3624INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5940-01-374-8363INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
12419928-003
5305-01-599-2606INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
30521

Frequently Asked Questions

What is NSN 5331-01-412-9732?

NSN 5331-01-412-9732 is a O-Ring, manufactured by Blissfield Manufacturing Company, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-412-9732?

NSN 5331-01-412-9732 has 1 cross-referenced part number: 30521 (Blissfield Manufacturing Company).

What NSN replaces 5331-01-412-9732?

There are 7 known substitutes for 5331-01-412-9732: 5310-00-013-7718, 5360-00-292-1129, 5310-00-385-5463 and 4 more. Verify interchangeability with system specifications before substitution.

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