PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS568-010MILR25897CL2O-Ring

Sae International Dba Sae International · NSN 5331-00-559-4015 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-559-4015 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-559-4015. Primary manufacturer part number: AS568-010MILR25897CL2.
Features
  • O-Ring — FSC 5331
  • Hardness Rating: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MINIMUM
  • Center Hole Diameter: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
  • Criticality Code Justification: ZZZY
  • Outside Diameter: 0.379 INCHES NOMINAL IN
  • Reference Number Differentiating Characteristics: CLEANED IN ACCORDANCE WITH MIL-P-52211/CE/
  • Material Document and Classification: MIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
  • Material: RUBBER FLUOROCARBON CLASS FPM
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Fluorocarbon Class Fpm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-559-4015, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-559-4015
Primary Part NumberAS568-010MILR25897CL2
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Hardness Rating85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MINIMUM
Center Hole Diameter0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
Criticality Code JustificationZZZY
Outside Diameter0.379 INCHES NOMINAL IN
Reference Number Differentiating CharacteristicsCLEANED IN ACCORDANCE WITH MIL-P-52211/CE/
Material Document and ClassificationMIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialRUBBER FLUOROCARBON CLASS FPM
Elongation Percentage125 MAXIMUM
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5331-00-782-7566NAS1594-010 INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-01-062-4466M83248/1-010CP INTERCHANGEABLE
O-Ring
Naval Inventory Control Point Mechanicsburg
Cross-Reference Index
Part NumberManufacturer
AS568-010MILR25897CL2 Sae International Dba Sae International (USA)
NAS1594-010CP Naval Inventory Control Point Mechanicsburg (USA)
4400591-0100CP Naval Inventory Control Point Mechanicsburg (USA)
4400591-0100 Marotta Controls Inc (USA)
NAS1594-010 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
4405591-0103CP Naval Inventory Control Point Mechanicsburg (USA)
JJ/KK.U-/U/O Marotta Controls Inc (USA)
AS568-010MILR25897CL2 Society of Automotive Engineers Inc (USA)
281770-0001 ITEM 61CP Naval Inventory Control Point Mechanicsburg (USA)
281770-0001 ITEM 61 Marotta Controls Inc (USA)
280974-0001PC61 Marotta Controls Inc (USA)
AS568-010MILR25897CL2CP Naval Inventory Control Point Mechanicsburg (USA)
280974-0001PC61CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5331-00-782-7566INTERCHANGEABLE
O-RING
NAS1594-010
5331-01-062-4466INTERCHANGEABLE
O-RING
M83248/1-010CP

Frequently Asked Questions

What is NSN 5331-00-559-4015?

NSN 5331-00-559-4015 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-559-4015?

NSN 5331-00-559-4015 has 13 cross-referenced part numbers: AS568-010MILR25897CL2 (Sae International Dba Sae International), NAS1594-010CP (Naval Inventory Control Point Mechanicsburg), 4400591-0100CP (Naval Inventory Control Point Mechanicsburg), 4400591-0100 (Marotta Controls Inc), NAS1594-010 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use) and 8 more.

What NSN replaces 5331-00-559-4015?

There are 2 known substitutes for 5331-00-559-4015: 5331-00-782-7566, 5331-01-062-4466. Verify interchangeability with system specifications before substitution.

What are the specifications of AS568-010MILR25897CL2?

Key specifications for AS568-010MILR25897CL2: Hardness Rating: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MINIMUM; Center Hole Diameter: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN; Criticality Code Justification: ZZZY; Outside Diameter: 0.379 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-559-4015 still in active supply?

NSN 5331-00-559-4015 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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