PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

432-01O-Ring

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 5331-01-256-0430 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-256-0430 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-256-0430. Primary manufacturer part number: 432-01.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-256-0430, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersTrac Regulator Co., Inc. Dba Trac Regulator Co Inc (CAGE 55378)
Technical Specifications
ParameterValue
NSN5331-01-256-0430
Primary Part Number432-01
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4710-00-177-87564-320-1 INTERCHANGEABLE
Tube,undervoltage
Fireye Inc
3110-00-203-4103158300-4 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5962-00-300-237543-201 INTERCHANGEABLE
Microcircuit,linear
Hydro-Aire Aerospace Corp
3110-00-554-2976A246405A INTERCHANGEABLE
Bearing,ball,annular
Chrysler Realty Company Llc Dba Daimler Chrysler
5330-01-278-649443201 INTERCHANGEABLE
Seal
A W Chesterton Co Div Sealing Device Division
5925-01-431-2180E81 U2A/11.022.100.735 INTERCHANGEABLE
Circuit Breaker
Northrop Grumman Systems Corporation
7035-01-449-46684320-1 INTERCHANGEABLE
Receiver-Transmitter,digital DAT
Lancast Inc
7050-01-506-90284320-1 INTERCHANGEABLE
Converter,digital to Digital
Omnitron Systems Technology, Inc. Dba Omnitron Systems Technology Inc
Cross-Reference Index
Part NumberManufacturer
40398-4 FIND NO Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
432-01 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
4710-00-177-8756INTERCHANGEABLE
TUBE,UNDERVOLTAGE
4-320-1
3110-00-203-4103INTERCHANGEABLE
BEARING,BALL,ANNULAR
158300-4
5962-00-300-2375INTERCHANGEABLE
MICROCIRCUIT,LINEAR
43-201
3110-00-554-2976INTERCHANGEABLE
BEARING,BALL,ANNULAR
A246405A
5330-01-278-6494INTERCHANGEABLE
SEAL
43201
5925-01-431-2180INTERCHANGEABLE
CIRCUIT BREAKER
E81 U2A/11.022.100.735
7035-01-449-4668INTERCHANGEABLE
RECEIVER-TRANSMITTER,DIGITAL DAT
4320-1
7050-01-506-9028INTERCHANGEABLE
CONVERTER,DIGITAL TO DIGITAL
4320-1

Frequently Asked Questions

What is NSN 5331-01-256-0430?

NSN 5331-01-256-0430 is a O-Ring, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-256-0430?

NSN 5331-01-256-0430 has 2 cross-referenced part numbers: 40398-4 FIND NO (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 432-01 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 5331-01-256-0430?

There are 8 known substitutes for 5331-01-256-0430: 4710-00-177-8756, 3110-00-203-4103, 5962-00-300-2375 and 5 more. Verify interchangeability with system specifications before substitution.

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