PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

186901O-Ring

Eaton Aerospace, Llc Dba Jackson South · NSN 5331-00-727-4084 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-727-4084 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-727-4084. Primary manufacturer part number: 186901.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Center Hole Diameter: 0.853 INCHES MINIMUM AND 0.865 INCHES MAXIMUM IN
  • 2 verified cross-references
  • Primary manufacturer: Eaton Aerospace, Llc Dba Jackson South
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Isobutylene-Isoprene Class Iir construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-727-4084, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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.

Technical Specifications
ParameterValue
NSN5331-00-727-4084
Primary Part Number186901
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
MaterialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Center Hole Diameter0.853 INCHES MINIMUM AND 0.865 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-576-9251 INTERCHANGEABLE
Washer,flat
5120-01-204-5071003-1102 INTERCHANGEABLE
Wrench,torque
Deutz Corporation
3120-01-210-297990217 INTERCHANGEABLE
Bearing,plain,rod End
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
4130-01-412-8461638090217 INTERCHANGEABLE
Extruding Head Assembly
Wilshire Corp
5995-01-533-052190-217 INTERCHANGEABLE
Cable Assembly,special Purpose,e
L3 Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
186901 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
902-17 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5310-00-576-9251INTERCHANGEABLE
WASHER,FLAT
5120-01-204-5071INTERCHANGEABLE
WRENCH,TORQUE
003-1102
3120-01-210-2979INTERCHANGEABLE
BEARING,PLAIN,ROD END
90217
4130-01-412-8461INTERCHANGEABLE
EXTRUDING HEAD ASSEMBLY
638090217
5995-01-533-0521INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
90-217

Frequently Asked Questions

What is NSN 5331-00-727-4084?

NSN 5331-00-727-4084 is a O-Ring, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-727-4084?

NSN 5331-00-727-4084 has 2 cross-referenced part numbers: 186901 (Eaton Aerospace, Llc Dba Jackson South), 902-17 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 5331-00-727-4084?

There are 5 known substitutes for 5331-00-727-4084: 5310-00-576-9251, 5120-01-204-5071, 3120-01-210-2979 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 186901?

Key specifications for 186901: Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 0.853 INCHES MINIMUM AND 0.865 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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