PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS3209-239O-Ring

Sae International Dba Sae International · NSN 5331-00-165-1957 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-165-1957 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-165-1957. Primary manufacturer part number: AS3209-239.
Features
  • O-Ring — FSC 5331
  • Temp Rating: -15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
  • Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Outside Diameter: 3.851 INCHES MINIMUM AND 3.923 INCHES MAXIMUM IN
  • Center Hole Diameter: 3.581 INCHES MINIMUM AND 3.637 INCHES MAXIMUM IN
  • Elongation Percentage: 125 MAXIMUM
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 5331-00-165-1957, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 36 commercial cross-references from 18 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-165-1957
Primary Part NumberAS3209-239
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Temp Rating-15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
Hardness Rating75.0 SHORE DUROMETER A NOMINAL
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MaterialRUBBER FLUOROCARBON CLASS FPM
Outside Diameter3.851 INCHES MINIMUM AND 3.923 INCHES MAXIMUM IN
Center Hole Diameter3.581 INCHES MINIMUM AND 3.637 INCHES MAXIMUM IN
Elongation Percentage125 MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5331-00-291-3076SAE-AS29513-239 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5315-01-227-132999120871 INTERCHANGEABLE
Key,machine
Alfa Laval Inc
5331-01-368-4665938434663U01 INTERCHANGEABLE
O-Ring
Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am
5331-01-470-1481AS3085-239 INTERCHANGEABLE
Packing,preformed,a
Rolls Royce Corp
5325-01-580-343514637 INTERCHANGEABLE
Grommet,metallic
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
J221P239 General Electric Company (USA)
B-631-12505-40 B.w. Elliott Manufacturing Co., Llc (USA)
5331PL1673263 Jednolity Indeks Materialowy - Uniform Material Index (POL)
SAE-AMS7276 Sae International Dba Sae International (USA)
14-637 Zf Industrieantriebe Witten Gmbh (DEU)
83248/1-239 Zf Industrieantriebe Witten Gmbh (DEU)
DD-4639 REF NO. 14 Cunico Corporation (USA)
22105 ITEM 16 B.w. Elliott Manufacturing Co., Llc (USA)
AS3209-239 Society of Automotive Engineers Inc (USA)
AS3209-239 Leonardo Spa Helicopters Division - Production Site (ITA)
30093-40930 ITEM 15 Moog Inc. Dba Ampac-Isp Corp (USA)
AS3209-239 PRIMARY Sae International Dba Sae International (USA)
M83248/1-239 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
DD-4697 REF NO 14 Cunico Corporation (USA)
2-239V1226-75 Parker-Hannifin Corp Div O-Ring Division (USA)
6879100-239 Allison Transmission Inc Dba Allison Transmission, Inc (USA)
M83248/1-239 Zf Industrieantriebe Witten Gmbh (DEU)
MILR83248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2-239V0747-75 Parker-Hannifin Corp Div O-Ring Division (USA)
5331PL1698116 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
5331-00-291-3076INTERCHANGEABLE
O-RING
SAE-AS29513-239
5315-01-227-1329INTERCHANGEABLE
KEY,MACHINE
99120871
5331-01-368-4665INTERCHANGEABLE
O-RING
938434663U01
5331-01-470-1481INTERCHANGEABLE
PACKING,PREFORMED,A
AS3085-239
5325-01-580-3435INTERCHANGEABLE
GROMMET,METALLIC
14637

Frequently Asked Questions

What is NSN 5331-00-165-1957?

NSN 5331-00-165-1957 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 5331-00-165-1957?

NSN 5331-00-165-1957 has 36 cross-referenced part numbers: J221P239 (General Electric Company), B-631-12505-40 (B.w. Elliott Manufacturing Co., Llc), 5331PL1673263 (Jednolity Indeks Materialowy - Uniform Material Index), SAE-AMS7276 (Sae International Dba Sae International), 14-637 (Zf Industrieantriebe Witten Gmbh) and 31 more.

What NSN replaces 5331-00-165-1957?

There are 5 known substitutes for 5331-00-165-1957: 5331-00-291-3076, 5315-01-227-1329, 5331-01-368-4665 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS3209-239?

Key specifications for AS3209-239: Temp Rating: -15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-165-1957 still in active supply?

NSN 5331-00-165-1957 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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