PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50-023O-Ring

Martin-Baker Aircraft Company Limited · NSN 5331-00-038-8091 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-038-8091 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-038-8091. Primary manufacturer part number: 50-023.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Martin-Baker Aircraft Company Limited
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-00-038-8091, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Martin-Baker Aircraft Company Limited. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersMartin-Baker Aircraft Company Limited (CAGE U1604)
Technical Specifications
ParameterValue
NSN5331-00-038-8091
Primary Part Number50-023
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMartin-Baker Aircraft Company Limited
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-005-762650023 INTERCHANGEABLE
Cartridge,relief Valve
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
3110-00-065-004150023 INTERCHANGEABLE
Bearing,roller,needle
Accurate Bushing Company, Inc.
5330-00-179-210672-58500-539 INTERCHANGEABLE
Seal,plain Encased
Fairbanks Morse, Llc
5820-00-200-597350023 INTERCHANGEABLE
Holder Assy
Apw Electronic Solutions
5815-00-228-6709SC-C-69992-2 INTERCHANGEABLE
Bar,connecting,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3010-00-352-862550023 INTERCHANGEABLE
Shifter Fork,nonvehicular
Sealcraft Corporation
5331-00-410-296650-023 INTERCHANGEABLE
O-Ring
James Walker & Co Ltd
2805-00-678-38581639614 INTERCHANGEABLE
Oil Pump,engine
Chrysler Realty Company Llc Dba Daimler Chrysler
5930-00-792-275605002-03N INTERCHANGEABLE
Switch,rotary
Grayhill Inc
2040-01-036-200950023 INTERCHANGEABLE
Tube Assembly,mast
L3 Technologies, Inc. Div L3 Keo
Cross-Reference Index
Part NumberManufacturer
50-023 PRIMARY Martin-Baker Aircraft Company Limited (GBR)
Related Parts
4820-00-005-7626INTERCHANGEABLE
CARTRIDGE,RELIEF VALVE
50023
3110-00-065-0041INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
50023
5330-00-179-2106INTERCHANGEABLE
SEAL,PLAIN ENCASED
72-58500-539
5820-00-200-5973INTERCHANGEABLE
HOLDER ASSY
50023
5815-00-228-6709INTERCHANGEABLE
BAR,CONNECTING,TELETYPEWRITER
SC-C-69992-2
3010-00-352-8625INTERCHANGEABLE
SHIFTER FORK,NONVEHICULAR
50023
5331-00-410-2966INTERCHANGEABLE
O-RING
50-023
2805-00-678-3858INTERCHANGEABLE
OIL PUMP,ENGINE
1639614
5930-00-792-2756INTERCHANGEABLE
SWITCH,ROTARY
05002-03N
2040-01-036-2009INTERCHANGEABLE
TUBE ASSEMBLY,MAST
50023
4810-01-165-7934INTERCHANGEABLE
CAP,VALVE
50023
4730-01-215-3214INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
50-023

Frequently Asked Questions

What is NSN 5331-00-038-8091?

NSN 5331-00-038-8091 is a O-Ring, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-038-8091?

NSN 5331-00-038-8091 has 1 cross-referenced part number: 50-023 (Martin-Baker Aircraft Company Limited).

What NSN replaces 5331-00-038-8091?

There are 12 known substitutes for 5331-00-038-8091: 4820-00-005-7626, 3110-00-065-0041, 5330-00-179-2106 and 9 more. Verify interchangeability with system specifications before substitution.

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