The O-Ring, cataloged under National Stock Number 5331-00-165-1981, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 21 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-00-165-1981 |
| Primary Part Number | AS3581-906 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | CANCELLED |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Outside Diameter | 0.613 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.461 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2-906-N674-70 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 5331PL1284848 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| AMS7259D | Society of Automotive Engineers Inc (USA) |
| M83248/2-906 | Sae International Dba Sae International (USA) |
| 3-906 V709-90 | Parker Hannifin Gmbh O-Ring Division (DEU) |
| BACP11PB6 | The Boeing Company Div Defense (USA) |
| 52046 FIND 40 | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
| V0709 3-906 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 54-67-2906 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 6640219 FIND 16 | Naval Sea Systems Command (USA) |
| PD54762 ITEM 7 | Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control (USA) |
| 21727-400 FIND 10 | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
| 3-906 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 5331PL0732023 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 3-906 V709-90 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 21805-78062 FIND 21 | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
| 2621-607-01 PC 65-5 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| PRP906-19359 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| M83248/2-906 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M83248/2-906CP | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5331-00-165-1981 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-165-1981 has 50 cross-referenced part numbers: 2-906-N674-70 (Zf Industrieantriebe Witten Gmbh), 5331PL1284848 (Jednolity Indeks Materialowy - Uniform Material Index), AMS7259D (Society of Automotive Engineers Inc), M83248/2-906 (Sae International Dba Sae International), 3-906 V709-90 (Parker Hannifin Gmbh O-Ring Division) and 45 more.
There are 12 known substitutes for 5331-00-165-1981: 5331-00-117-4744, 5985-00-264-5504, 4720-00-486-8211 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for AS3581-906: Material: RUBBER FLUOROCARBON CLASS FPM; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Outside Diameter: 0.613 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN; Cross-Sectional Height: 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-165-1981 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.