PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56954O-Ring

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5331-00-409-3061 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-409-3061 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-409-3061. Primary manufacturer part number: 56954.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Center Hole Diameter: 1.231 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
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 5331-00-409-3061, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-409-3061
Primary Part Number56954
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MaterialRUBBER FLUOROCARBON CLASS FPM
Center Hole Diameter1.231 INCHES MINIMUM AND 1.243 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5815-00-610-7814SM-C-187680 INTERCHANGEABLE
Holder,number Tape
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-01-324-213856954 INTERCHANGEABLE
Coupling Half,quick Disconnect
Nycoil Co
Cross-Reference Index
Part NumberManufacturer
56954 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5815-00-610-7814INTERCHANGEABLE
HOLDER,NUMBER TAPE
SM-C-187680
4730-01-324-2138INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
56954

Frequently Asked Questions

What is NSN 5331-00-409-3061?

NSN 5331-00-409-3061 is a O-Ring, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-409-3061?

NSN 5331-00-409-3061 has 1 cross-referenced part number: 56954 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 5331-00-409-3061?

There are 2 known substitutes for 5331-00-409-3061: 5815-00-610-7814, 4730-01-324-2138. Verify interchangeability with system specifications before substitution.

What are the specifications of 56954?

Key specifications for 56954: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM; Center Hole Diameter: 1.231 INCHES MINIMUM AND 1.243 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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