PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5543-1O-Ring

Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution · NSN 5331-01-421-6084 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-421-6084 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-421-6084. Primary manufacturer part number: 5543-1.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-421-6084, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersEaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (CAGE 00624); Eaton Aviation Corporation (CAGE 08118)
Technical Specifications
ParameterValue
NSN5331-01-421-6084
Primary Part Number5543-1
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerEaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6850-00-403-468155441 INTERCHANGEABLE
Sealer,chemical
Loctite Corp
3455-01-044-79491726-0500 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
4320-01-375-2134RY-148623 PIECE 17 INTERCHANGEABLE
Bracket,thrust Bearing
Curtiss-Wright Electro-Mechanical Corporation Div Epd
1680-01-534-146355431 INTERCHANGEABLE
Cylinder Assembly,reaction
Aerovironment, Inc. Dba Aerovironment Inc
1080-01-541-23702KP725 INTERCHANGEABLE
Cover,camouflage Screening
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
5543-1 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
5543-1 Eaton Aviation Corporation (USA)
Related Parts
6850-00-403-4681INTERCHANGEABLE
SEALER,CHEMICAL
55441
3455-01-044-7949INTERCHANGEABLE
CUTTER,MILLING,END
1726-0500
4320-01-375-2134INTERCHANGEABLE
BRACKET,THRUST BEARING
RY-148623 PIECE 17
1680-01-534-1463INTERCHANGEABLE
CYLINDER ASSEMBLY,REACTION
55431
1080-01-541-2370INTERCHANGEABLE
COVER,CAMOUFLAGE SCREENING
2KP725

Frequently Asked Questions

What is NSN 5331-01-421-6084?

NSN 5331-01-421-6084 is a O-Ring, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-421-6084?

NSN 5331-01-421-6084 has 2 cross-referenced part numbers: 5543-1 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 5543-1 (Eaton Aviation Corporation).

What NSN replaces 5331-01-421-6084?

There are 5 known substitutes for 5331-01-421-6084: 6850-00-403-4681, 3455-01-044-7949, 4320-01-375-2134 and 2 more. Verify interchangeability with system specifications before substitution.

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