PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-20N-9O-Ring

Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division · NSN 5331-01-306-6043 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-306-6043 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-306-6043. Primary manufacturer part number: 3-20N-9.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 1.461 INCHES MINIMUM AND 1.489 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-306-6043, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 3 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-306-6043
Primary Part Number3-20N-9
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
StatusACTIVE
Cross-Sectional Height0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter1.461 INCHES MINIMUM AND 1.489 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5331-00-226-2995 INTERCHANGEABLE
O-Ring
5331-01-024-2512AS3581-920 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-01-388-04323-920N552-90 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
Cross-Reference Index
Part NumberManufacturer
3-20N-9 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA)
3920N-9 Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA)
3-920N552-90 Parker-Hannifin Corp Div O-Ring Division (USA)
Related Parts
5331-00-226-2995INTERCHANGEABLE
O-RING
5331-01-024-2512INTERCHANGEABLE
O-RING
AS3581-920
5331-01-388-0432INTERCHANGEABLE
O-RING
3-920N552-90

Frequently Asked Questions

What is NSN 5331-01-306-6043?

NSN 5331-01-306-6043 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-306-6043?

NSN 5331-01-306-6043 has 3 cross-referenced part numbers: 3-20N-9 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 3920N-9 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 3-920N552-90 (Parker-Hannifin Corp Div O-Ring Division).

What NSN replaces 5331-01-306-6043?

There are 3 known substitutes for 5331-01-306-6043: 5331-00-226-2995, 5331-01-024-2512, 5331-01-388-0432. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-20N-9?

Key specifications for 3-20N-9: Cross-Sectional Height: 0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 1.461 INCHES MINIMUM AND 1.489 INCHES MAXIMUM IN. 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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