PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

NAS1593-025O-Ring

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5331-00-901-8259 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-901-8259 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-901-8259. Primary manufacturer part number: NAS1593-025.
Features
  • O-Ring — FSC 5331
  • Material Document and Classification: MIL-R-25897,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Center Hole Diameter: 1.165 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
  • Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
  • Specification/standard Data: 80205-NAS1593 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • 3 verified cross-references
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 5331-00-901-8259, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-901-8259
Primary Part NumberNAS1593-025
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Material Document and ClassificationMIL-R-25897,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialRUBBER FLUOROCARBON CLASS FPM
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Center Hole Diameter1.165 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
Hardness Rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
Specification/standard Data80205-NAS1593 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5331-00-166-1022AS3209-025 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
NAS1593-025 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS1593 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
025-17107 PRIMARY Parker Hannifin Corporation Div O-Ring Division (USA)
Related Parts
5331-00-166-1022INTERCHANGEABLE
O-RING
AS3209-025

Frequently Asked Questions

What is NSN 5331-00-901-8259?

NSN 5331-00-901-8259 is a O-Ring, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-901-8259?

NSN 5331-00-901-8259 has 3 cross-referenced part numbers: NAS1593-025 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NAS1593 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 025-17107 (Parker Hannifin Corporation Div O-Ring Division).

What NSN replaces 5331-00-901-8259?

There is 1 known substitute for 5331-00-901-8259: 5331-00-166-1022. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1593-025?

Key specifications for NAS1593-025: Material Document and Classification: MIL-R-25897,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE; Material: RUBBER FLUOROCARBON CLASS FPM; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Special Features: CROSS-SECTIONAL SHAPE STYLE: O-RING. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-901-8259 still in active supply?

NSN 5331-00-901-8259 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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