PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS3209-015O-Ring

Aertekno S.r.l. · NSN 5331-00-166-0991 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-166-0991 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-166-0991. Primary manufacturer part number: AS3209-015.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Material Document and Classification: MIL-R-83248 TYPE I, CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE
  • Color: BLACK
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL
  • Elongation Percentage: 125 MAXIMUM
  • Outside Diameter: 0.691 INCHES NOMINAL IN
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 5331-00-166-0991, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Aertekno S.r.l.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 33 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-166-0991
Primary Part NumberAS3209-015
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerAertekno S.r.l.
StatusCANCELLED
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Material Document and ClassificationMIL-R-83248 TYPE I, CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE
ColorBLACK
MaterialRUBBER FLUOROCARBON CLASS FPM
Hardness Rating75.0 SHORE DUROMETER A NOMINAL
Elongation Percentage125 MAXIMUM
Outside Diameter0.691 INCHES NOMINAL IN
Center Hole Diameter0.544 INCHES MINIMUM AND 0.558 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5330-00-007-2925M832481015 INTERCHANGEABLE
Packing,preformed
Pall Aeropower Corporation
5331-00-008-5919S9413-015 INTERCHANGEABLE
O-Ring
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
5331-00-166-0990182629 INTERCHANGEABLE
O-Ring
Woodward, Inc. Div Fuel Systems and Controls
5331-00-166-1087AS3581-015 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
4140-00-185-157618266-1 INTERCHANGEABLE
Stator,fan
Rtx Corporation Div Pratt & Whitney
5133-00-189-9304 INTERCHANGEABLE
Drill,twist
2530-00-368-7012FC15298E INTERCHANGEABLE
Piston,hydraulic Brake
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5961-00-487-2538200159 INTERCHANGEABLE
Transistor
Astronics Test Systems Inc
5331-00-922-5956AS3209-015 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5815-00-944-0387182661 INTERCHANGEABLE
Post
Telemechanics Inc
Cross-Reference Index
Part NumberManufacturer
AS3209-015 Aertekno S.r.l. (ITA)
J221P015 Ge Avio Srl (ITA)
675-00015-0 Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA)
AS3209-015 Society of Automotive Engineers Inc (USA)
J221P015 Fincantieri S.p.a. Div Direzione Navi Militari (ITA)
2-015V1226-75 Parker-Hannifin Corp Div O-Ring Division (USA)
AMS7276 Society of Automotive Engineers Inc (USA)
2-015 77-545 Zf Industrieantriebe Witten Gmbh (DEU)
2-015V1164-75 Parker-Hannifin Corp Div O-Ring Division (USA)
62G008MPC2 Ametek Inc Schutte and Koerting Div (USA)
58-44-27 Zf Industrieantriebe Witten Gmbh (DEU)
J221P015 Leonardo Spa Helicopters Division - Production Site (ITA)
MS9388-015 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
015-17107A Parker Hannifin Corporation Div O-Ring Division (USA)
AS3085-015 Zf Industrieantriebe Witten Gmbh (DEU)
AS3209-015 Seals & Packings, Llc (USA)
5331PL1730316 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5331001660991 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
20015-9 Williams International Co., L.l.c. (USA)
182661 Woodward, Inc. Div Fuel Systems and Controls (USA)
Related Parts
5330-00-007-2925INTERCHANGEABLE
PACKING,PREFORMED
M832481015
5331-00-008-5919INTERCHANGEABLE
O-RING
S9413-015
5331-00-166-0990INTERCHANGEABLE
O-RING
182629
5331-00-166-1087INTERCHANGEABLE
O-RING
AS3581-015
4140-00-185-1576INTERCHANGEABLE
STATOR,FAN
18266-1
5133-00-189-9304INTERCHANGEABLE
DRILL,TWIST
2530-00-368-7012INTERCHANGEABLE
PISTON,HYDRAULIC BRAKE
FC15298E
5961-00-487-2538INTERCHANGEABLE
TRANSISTOR
200159
5331-00-922-5956INTERCHANGEABLE
O-RING
AS3209-015
5815-00-944-0387INTERCHANGEABLE
POST
182661
5331-01-222-3503INTERCHANGEABLE
O-RING
5330-01-267-3790INTERCHANGEABLE
PACKING,PREFORMED

Frequently Asked Questions

What is NSN 5331-00-166-0991?

NSN 5331-00-166-0991 is a O-Ring, manufactured by Aertekno S.r.l., classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-166-0991?

NSN 5331-00-166-0991 has 50 cross-referenced part numbers: AS3209-015 (Aertekno S.r.l.), J221P015 (Ge Avio Srl), 675-00015-0 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division), AS3209-015 (Society of Automotive Engineers Inc), J221P015 (Fincantieri S.p.a. Div Direzione Navi Militari) and 45 more.

What NSN replaces 5331-00-166-0991?

There are 12 known substitutes for 5331-00-166-0991: 5330-00-007-2925, 5331-00-008-5919, 5331-00-166-0990 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS3209-015?

Key specifications for AS3209-015: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Material Document and Classification: MIL-R-83248 TYPE I, CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE; Color: BLACK; Part Name Assigned by Controlling Agency: PACKING, PREFORMED-"O"RING, MIL-R-83248, 75 DUROMETER. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-166-0991 still in active supply?

NSN 5331-00-166-0991 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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