The O-Ring, cataloged under National Stock Number 5331-01-571-2197, 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 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-571-2197 |
| Primary Part Number | 5-320-B612-70 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Color | BLACK |
| Center Hole Diameter | 1.094 INCHES MINIMUM AND 1.106 INCHES MAXIMUM IN |
| Material | RUBBER BUTYL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B0612-70-5-320 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 5-320-B612-70 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
NSN 5331-01-571-2197 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-571-2197 has 2 manufacturer part numbers on file: B0612-70-5-320 (Parker-Hannifin Corp Div O-Ring Division), 5-320-B612-70 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for 5-320-B612-70: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Color: BLACK; Center Hole Diameter: 1.094 INCHES MINIMUM AND 1.106 INCHES MAXIMUM IN; End Item Identification: 5999-01-569-9408. 4 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.
NSN 5331-01-571-2197 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.