PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS3209-221O-Ring

Sae International Dba Sae International · NSN 5331-00-166-8412 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-166-8412 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-166-8412. Primary manufacturer part number: AS3209-221.
Features
  • O-Ring — FSC 5331
  • Outside Diameter: 1.679 INCHES MINIMUM AND 1.719 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL
  • Center Hole Diameter: 1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN
  • Elongation Percentage: 125 MAXIMUM
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • 30 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 5331-00-166-8412, 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 30 commercial cross-references from 13 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
NSN5331-00-166-8412
Primary Part NumberAS3209-221
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Outside Diameter1.679 INCHES MINIMUM AND 1.719 INCHES MAXIMUM IN
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Hardness Rating75.0 SHORE DUROMETER A NOMINAL
Center Hole Diameter1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN
Elongation Percentage125 MAXIMUM
MaterialRUBBER FLUOROCARBON CLASS FPM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5331-01-203-6549 INTERCHANGEABLE
O-Ring
5331-01-221-4208 INTERCHANGEABLE
O-Ring
5330-01-252-7421V3997PC19 INTERCHANGEABLE
Packing,preformed
Portland Valve Llc
Cross-Reference Index
Part NumberManufacturer
SAE-AMS7276 Sae International Dba Sae International (USA)
AS568-221MIL-R-83248 TY1 CL1 Society of Automotive Engineers Inc (USA)
MILR83248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
OR36,09X3,53 2-221 V747-75 Parker Hannifin Gmbh O-Ring Division (DEU)
2-221V0747-75 Parker-Hannifin Corp Div O-Ring Division (USA)
AMS 7276-221 Society of Automotive Engineers Inc (USA)
8528 PIECE 36 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
M83248/1-221 Zf Industrieantriebe Witten Gmbh (DEU)
AS3209-221 Society of Automotive Engineers Inc (USA)
AMS7276G Sae International Dba Sae International (USA)
10159872 Nimikkeistokeskus Ncb Finland (FIN)
M83248 2-026 Zf Industrieantriebe Witten Gmbh (DEU)
AMS7276G Society of Automotive Engineers Inc (USA)
701-2298824 PIECE 389 Naval Ship Systems Command (USA)
500000-0026-000 2 Zf Industrieantriebe Witten Gmbh (DEU)
5331001668412 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
30808993 ITEM 24 Warren Controls, Inc. (USA)
AS568-221MIL-R-83248 TY1 CL1 Sae International Dba Sae International (USA)
ST3001-221 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
2-221 V747-75 Parker Hannifin Gmbh O-Ring Division (DEU)
Related Parts
5331-01-203-6549INTERCHANGEABLE
O-RING
5331-01-221-4208INTERCHANGEABLE
O-RING
5330-01-252-7421INTERCHANGEABLE
PACKING,PREFORMED
V3997PC19

Frequently Asked Questions

What is NSN 5331-00-166-8412?

NSN 5331-00-166-8412 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 5331-00-166-8412?

NSN 5331-00-166-8412 has 30 cross-referenced part numbers: SAE-AMS7276 (Sae International Dba Sae International), AS568-221MIL-R-83248 TY1 CL1 (Society of Automotive Engineers Inc), MILR83248 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), OR36,09X3,53 2-221 V747-75 (Parker Hannifin Gmbh O-Ring Division), 2-221V0747-75 (Parker-Hannifin Corp Div O-Ring Division) and 25 more.

What NSN replaces 5331-00-166-8412?

There are 3 known substitutes for 5331-00-166-8412: 5331-01-203-6549, 5331-01-221-4208, 5330-01-252-7421. Verify interchangeability with system specifications before substitution.

What are the specifications of AS3209-221?

Key specifications for AS3209-221: Outside Diameter: 1.679 INCHES MINIMUM AND 1.719 INCHES MAXIMUM IN; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-166-8412 still in active supply?

NSN 5331-00-166-8412 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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