PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

AS3209-025O-Ring

Sae International Dba Sae International · NSN 5331-00-166-1022 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-166-1022 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-166-1022. Primary manufacturer part number: AS3209-025.
Features
  • O-Ring — FSC 5331
  • Elongation Percentage: 125 MAXIMUM
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL
  • Outside Diameter: 1.299 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
  • Center Hole Diameter: 1.165 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
  • 41 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 5331-00-166-1022, 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 41 commercial cross-references from 23 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-166-1022
Primary Part NumberAS3209-025
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Elongation Percentage125 MAXIMUM
MaterialRUBBER FLUOROCARBON CLASS FPM
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Hardness Rating75.0 SHORE DUROMETER A NOMINAL
Outside Diameter1.299 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
Center Hole Diameter1.165 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5330-00-862-8639 INTERCHANGEABLE
Packing,preformed
5331-00-901-8259025-17107 INTERCHANGEABLE
O-Ring
Parker Hannifin Corporation Div O-Ring Division
5330-01-280-2630 INTERCHANGEABLE
Packing,preformed
Cross-Reference Index
Part NumberManufacturer
M83248/1-025 Society of Automotive Engineers Inc (USA)
AS568-025AMS7280 Society of Automotive Engineers Inc (USA)
M83248/1-025 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AMS7276 Sae International Dba Sae International (USA)
10159870 Nimikkeistokeskus Ncb Finland (FIN)
AS3209-025 Society of Automotive Engineers Inc (USA)
MIL-R-83248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
649-393-025-0 Cfm International Inc Dba Cfm International (USA)
649-393-025-0 Safran Aircraft Engines (FRA)
2-025V884-075 Parker-Hannifin Corp Div O-Ring Division (USA)
AS3209-025 Leonardo Spa Helicopters Division - Production Site (ITA)
PRP025-19357 Parker Hannifin Corporation Div O-Ring Division (USA)
M83248-1-025 Zf Industrieantriebe Witten Gmbh (DEU)
5331PL1334497 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AMS7276 Society of Automotive Engineers Inc (USA)
MS9388-025 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
9469127725 Pilatus Aircraft Ltd (CHE)
AS3209-025 Leonardo Uk Ltd (GBR)
5331PL1866567 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AS3209-025 PRIMARY Sae International Dba Sae International (USA)
Related Parts
5330-00-862-8639INTERCHANGEABLE
PACKING,PREFORMED
5331-00-901-8259INTERCHANGEABLE
O-RING
025-17107
5330-01-280-2630INTERCHANGEABLE
PACKING,PREFORMED

Frequently Asked Questions

What is NSN 5331-00-166-1022?

NSN 5331-00-166-1022 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 5331-00-166-1022?

NSN 5331-00-166-1022 has 41 cross-referenced part numbers: M83248/1-025 (Society of Automotive Engineers Inc), AS568-025AMS7280 (Society of Automotive Engineers Inc), M83248/1-025 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AMS7276 (Sae International Dba Sae International), 10159870 (Nimikkeistokeskus Ncb Finland) and 36 more.

What NSN replaces 5331-00-166-1022?

There are 3 known substitutes for 5331-00-166-1022: 5330-00-862-8639, 5331-00-901-8259, 5330-01-280-2630. Verify interchangeability with system specifications before substitution.

What are the specifications of AS3209-025?

Key specifications for AS3209-025: Elongation Percentage: 125 MAXIMUM; Material: RUBBER FLUOROCARBON CLASS FPM; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-166-1022 still in active supply?

NSN 5331-00-166-1022 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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