The O-Ring, cataloged under National Stock Number 5331-00-240-1955, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-240-1955 |
| Primary Part Number | AS3570-230 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Outside Diameter | 2.762 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 150 MAXIMUM |
| Center Hole Diameter | 2.474 INCHES MINIMUM AND 2.494 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5065D33 | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
| 2-230N180-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AS3570-230 PRIMARY | Sae International Dba Sae International (USA) |
| AN123890 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| AS3570-230 | 3/9 Design control — primary reference U.S. Government activity |
| 2-230 N180-70 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| AP24548 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| AP24548 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| SAE-AS3570 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AN123890 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-00-240-1955 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-240-1955 has 4 manufacturer part numbers on file: 5065D33 (Curtiss-Wright Controls, Inc. Div Actuation Division), 2-230N180-70 (Parker-Hannifin Corp Div O-Ring Division), AS3570-230 (Sae International Dba Sae International), AN123890 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for AS3570-230: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Outside Diameter: 2.762 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Elongation Percentage: 150 MAXIMUM. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.