The O-Ring, cataloged under National Stock Number 5331-01-033-8621, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-033-8621 |
| Primary Part Number | 90318 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Outside Diameter | 5.723 INCHES MINIMUM AND 5.817 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Center Hole Diameter | 5.327 INCHES MINIMUM AND 5.373 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 90318 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| N0506 2-356 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| MS9021-356 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 2-356 N506-65 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| SAE-AS3578 | Sae International Dba Sae International (USA) |
| 888F053002 ITEM 33 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| PRP568-356-4024-65 | Parco, Llc (USA) |
| 109A903182 | L3 Technologies, Inc. Div L3 Keo (USA) |
| AS3578-356 PRIMARY | Sae International Dba Sae International (USA) |
| AS3578-356 | Society of Automotive Engineers Inc (USA) |
NSN 5331-01-033-8621 is a O-Ring, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-033-8621 has 10 cross-referenced part numbers: 90318 (L3 Technologies, Inc. Div L3 Keo), N0506 2-356 (Parker-Hannifin Corp Div O-Ring Division), MS9021-356 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 2-356 N506-65 (Parker-Hannifin Corp Div O-Ring Division), SAE-AS3578 (Sae International Dba Sae International) and 5 more.
There are 4 known substitutes for 5331-01-033-8621: 5815-00-688-8919, 6550-01-339-6912, 5999-01-543-8514 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 90318: Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Outside Diameter: 5.723 INCHES MINIMUM AND 5.817 INCHES MAXIMUM IN; Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Center Hole Diameter: 5.327 INCHES MINIMUM AND 5.373 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.