The O-Ring, cataloged under National Stock Number 5331-01-028-0818, 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 13 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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-01-028-0818 |
| Primary Part Number | AS568-257 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | CANCELLED |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 5.836 INCHES MINIMUM AND 5.882 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Temp Rating | -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Elongation Percentage | 331 MAXIMUM |
| Outside Diameter | 6.094 INCHES MINIMUM AND 6.180 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AMS3215 | Sae International Dba Sae International (USA) |
| 2-257N674-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-257 | Zf Industrieantriebe Witten Gmbh (DEU) |
| AS568-257 PRIMARY | Sae International Dba Sae International (USA) |
| CLASS1SIZE257 | Society of Automotive Engineers Inc (USA) |
| 2-257 N674-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| VT10102 | Zf Industrieantriebe Witten Gmbh (DEU) |
| J120A | Society of Automotive Engineers Inc (USA) |
| 257-8307 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| J120A | Sae International Dba Sae International (USA) |
| PRP257-8307 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 2-257 N674-7 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AS568-257 | Society of Automotive Engineers Inc (USA) |
NSN 5331-01-028-0818 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-01-028-0818 has 13 cross-referenced part numbers: AMS3215 (Sae International Dba Sae International), 2-257N674-70 (Parker-Hannifin Corp Div O-Ring Division), 2-257 (Zf Industrieantriebe Witten Gmbh), AS568-257 (Sae International Dba Sae International), CLASS1SIZE257 (Society of Automotive Engineers Inc) and 8 more.
There are 12 known substitutes for 5331-01-028-0818: 5950-00-134-5864, 4730-00-239-1050, 5330-00-275-3466 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for AS568-257: Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 5.836 INCHES MINIMUM AND 5.882 INCHES MAXIMUM IN; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Temp Rating: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF. 7 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-01-028-0818 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.