PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LL-HX4-5039O-Ring

Defense Logistics Agency Dba Defense Supply Center Philadelphia · NSN 5331-01-255-9475 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-255-9475 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-255-9475. Primary manufacturer part number: LL-HX4-5039.
Features
  • O-Ring — FSC 5331
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION
  • Test Data Document: 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Criticality Code Justification: ZZZY
  • 2 verified cross-references
  • Primary manufacturer: Defense Logistics Agency Dba Defense Supply Center Philadelphia
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-255-9475, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-255-9475
Primary Part NumberLL-HX4-5039
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerDefense Logistics Agency Dba Defense Supply Center Philadelphia
StatusACTIVE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION
Test Data Document81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4810-00-613-28578526601 INTERCHANGEABLE
Valve,seat
Us Army Aviation and Missile Command
3120-00-661-552720756 INTERCHANGEABLE
Bearing,sleeve
Tulsa Winch, Inc.
5960-00-941-381920756 INTERCHANGEABLE
Electron Tube
Unison Industries Llc
4720-01-074-827020756 INTERCHANGEABLE
Hose,preformed
Gates Corporation
2590-01-151-204220756 INTERCHANGEABLE
Filter
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
3010-01-314-7547 INTERCHANGEABLE
Coupling,shaft,rigid
3040-01-382-202420756 INTERCHANGEABLE
Ball Joint
Liftking Manufacturing Corp
1010-01-524-201720-756 INTERCHANGEABLE
Brush Section Holder,artillery C
Penn Arms Inc
Cross-Reference Index
Part NumberManufacturer
LL-HX4-5039 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
2075-6 King Engineering Corporation Dba King-Gage Systems (USA)
Related Parts
4810-00-613-2857INTERCHANGEABLE
VALVE,SEAT
8526601
3120-00-661-5527INTERCHANGEABLE
BEARING,SLEEVE
20756
5960-00-941-3819INTERCHANGEABLE
ELECTRON TUBE
20756
4720-01-074-8270INTERCHANGEABLE
HOSE,PREFORMED
20756
2590-01-151-2042INTERCHANGEABLE
FILTER
20756
3010-01-314-7547INTERCHANGEABLE
COUPLING,SHAFT,RIGID
3040-01-382-2024INTERCHANGEABLE
BALL JOINT
20756
1010-01-524-2017INTERCHANGEABLE
BRUSH SECTION HOLDER,ARTILLERY C
20-756

Frequently Asked Questions

What is NSN 5331-01-255-9475?

NSN 5331-01-255-9475 is a O-Ring, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-255-9475?

NSN 5331-01-255-9475 has 2 cross-referenced part numbers: LL-HX4-5039 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), 2075-6 (King Engineering Corporation Dba King-Gage Systems).

What NSN replaces 5331-01-255-9475?

There are 8 known substitutes for 5331-01-255-9475: 4810-00-613-2857, 3120-00-661-5527, 5960-00-941-3819 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LL-HX4-5039?

Key specifications for LL-HX4-5039: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION; Test Data Document: 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Criticality Code Justification: ZZZY. 3 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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