The O-Ring, cataloged under National Stock Number 5331-01-204-2997, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-204-2997 |
| Primary Part Number | 2-225 E540-80 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Temp Rating | -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Outside Diameter | 2.111 INCHES MINIMUM AND 2.163 INCHES MAXIMUM IN |
| Hardness Rating | 80.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 1.841 INCHES MINIMUM AND 1.877 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| 2-225 E540-80 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AS568-225 2AA815A13F17EA14 | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 2-225E540-80 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| ASTEM D2000/2AA815A13F17EA14 | 5/1 Secondary reference U.S. Government activity |
| 2-225 E663-80 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| AS568-225 2AA815A13F17EA14 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-204-2997 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-204-2997 has 2 manufacturer part numbers on file: 2-225 E540-80 (Parker-Hannifin Corp Div O-Ring Division), AS568-225 2AA815A13F17EA14 (Sae International Dba Sae International).
Key specifications for 2-225 E540-80: Temp Rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Outside Diameter: 2.111 INCHES MINIMUM AND 2.163 INCHES MAXIMUM IN; Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL. 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.