PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LL-HX5-4415O-Ring

Defense Logistics Agency Dba Defense Supply Center Philadelphia · NSN 5331-01-268-1249 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-268-1249 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-268-1249. Primary manufacturer part number: LL-HX5-4415.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM
  • Criticality Code Justification: ZZZY
  • Temp Rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
  • 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
  • Center Hole Diameter: 0.484 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
  • 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.).
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Ethylene-Propylene Class Epm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-268-1249, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-268-1249
Primary Part NumberLL-HX5-4415
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerDefense Logistics Agency Dba Defense Supply Center Philadelphia
StatusACTIVE
MaterialRUBBER ETHYLENE-PROPYLENE CLASS EPM
Criticality Code JustificationZZZY
Temp Rating-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
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
Center Hole Diameter0.484 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
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.).
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5331-00-808-63882-015 E0540-80 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5331-01-014-2605NAS1611-014 INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-01-328-1994 INTERCHANGEABLE
O-Ring
5331-01-543-1329NAS1611-014A INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
LL-HX5-4415 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
NAS1611-014 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
10117183 Nimikkeistokeskus Ncb Finland (FIN)
Related Parts
5331-00-808-6388INTERCHANGEABLE
O-RING
2-015 E0540-80
5331-01-014-2605INTERCHANGEABLE
O-RING
NAS1611-014
5331-01-328-1994INTERCHANGEABLE
O-RING
5331-01-543-1329INTERCHANGEABLE
O-RING
NAS1611-014A

Frequently Asked Questions

What is NSN 5331-01-268-1249?

NSN 5331-01-268-1249 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 5331-01-268-1249?

NSN 5331-01-268-1249 has 3 cross-referenced part numbers: LL-HX5-4415 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), NAS1611-014 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 10117183 (Nimikkeistokeskus Ncb Finland).

What NSN replaces 5331-01-268-1249?

There are 4 known substitutes for 5331-01-268-1249: 5331-00-808-6388, 5331-01-014-2605, 5331-01-328-1994 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LL-HX5-4415?

Key specifications for LL-HX5-4415: Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM; Criticality Code Justification: ZZZY; Temp Rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; 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. 7 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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