PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS3581-020O-Ring

Sae International Dba Sae International · NSN 5331-01-127-0849 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-127-0849 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-127-0849. Primary manufacturer part number: AS3581-020.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 0.855 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
  • Outside Diameter: 1.004 INCHES NOMINAL IN
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
  • Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL
  • 14 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 5331-01-127-0849, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 8 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
NSN5331-01-127-0849
Primary Part NumberAS3581-020
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Center Hole Diameter0.855 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
Outside Diameter1.004 INCHES NOMINAL IN
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MaterialRUBBER FLUOROCARBON CLASS FPM
Temp Rating-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
Hardness Rating90.0 SHORE DUROMETER A NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5331-00-111-07341433-643376-3 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corporation Div Gas Turbine Fuel Systems
Cross-Reference Index
Part NumberManufacturer
4564-020 EU Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging (USA)
4564-020 EU Hydrasearch Company, Llc (USA)
AS3581-020 Society of Automotive Engineers Inc (USA)
NAS1594-020 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MIL-R-83248/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2996473-8 Zf Industrieantriebe Witten Gmbh (DEU)
M83248/2-020 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
513 CZ-020 Zf Industrieantriebe Witten Gmbh (DEU)
AS3581-020 PRIMARY Sae International Dba Sae International (USA)
D4160 ITEM 5,14,23 Danco Valve Company (USA)
C-6555/3080 PC 6 Hydrasearch Company, Llc (USA)
4564-020,EU Zf Industrieantriebe Witten Gmbh (DEU)
C-6555/3080 PC 6 Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging (USA)
SAE-AS3581 Sae International Dba Sae International (USA)
Related Parts
5331-00-111-0734INTERCHANGEABLE
O-RING
1433-643376-3

Frequently Asked Questions

What is NSN 5331-01-127-0849?

NSN 5331-01-127-0849 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 5331-01-127-0849?

NSN 5331-01-127-0849 has 14 cross-referenced part numbers: 4564-020 EU (Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging), 4564-020 EU (Hydrasearch Company, Llc), AS3581-020 (Society of Automotive Engineers Inc), NAS1594-020 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MIL-R-83248/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 9 more.

What NSN replaces 5331-01-127-0849?

There is 1 known substitute for 5331-01-127-0849: 5331-00-111-0734. Verify interchangeability with system specifications before substitution.

What are the specifications of AS3581-020?

Key specifications for AS3581-020: Center Hole Diameter: 0.855 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN; Outside Diameter: 1.004 INCHES NOMINAL IN; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-01-127-0849 still in active supply?

NSN 5331-01-127-0849 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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