The O-Ring, cataloged under National Stock Number 5331-01-026-4387, 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 9 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-026-4387 |
| Primary Part Number | AS568B-381 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material | RUBBER CHLOROPRENE CLASS CR |
| Center Hole Diameter | 11.910 INCHES MINIMUM AND 12.040 INCHES MAXIMUM IN |
| Outside Diameter | 12.320 INCHES MINIMUM AND 12.470 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Temp Rating | -35.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4592686 PIECE 6 | Naval Air Warfare Center Weapons Div (USA) |
| AS568B-381 PRIMARY | Sae International Dba Sae International (USA) |
| 2-381 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 2-381C147-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| C0873-70 2-381 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-381C873-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-381C147-7 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-381C147-70 | Zf Industrieantriebe Witten Gmbh (DEU) |
| AS568B-381 | Society of Automotive Engineers Inc (USA) |
NSN 5331-01-026-4387 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-026-4387 has 9 cross-referenced part numbers: 4592686 PIECE 6 (Naval Air Warfare Center Weapons Div), AS568B-381 (Sae International Dba Sae International), 2-381 (Zf Industrieantriebe Witten Gmbh), 2-381C147-70 (Parker-Hannifin Corp Div O-Ring Division), C0873-70 2-381 (Parker-Hannifin Corp Div O-Ring Division) and 4 more.
There are 12 known substitutes for 5331-01-026-4387: 5445-00-183-7703, 6130-00-497-3463, 8465-00-558-0151 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for AS568B-381: Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material: RUBBER CHLOROPRENE CLASS CR; Center Hole Diameter: 11.910 INCHES MINIMUM AND 12.040 INCHES MAXIMUM IN; Outside Diameter: 12.320 INCHES MINIMUM AND 12.470 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.