The O-Ring, cataloged under National Stock Number 5331-01-540-3602, 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 2 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-540-3602 |
| Primary Part Number | ST1946-906 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.078 INCHES NOMINAL IN |
| Center Hole Diameter | 0.468 INCHES NOMINAL IN |
| 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 |
|---|---|
| ST1946-906 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 7T0565-906 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| 7T0565-906 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 7T0566-906 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST1946-906 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
NSN 5331-01-540-3602 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-540-3602 has 5 manufacturer part numbers on file: ST1946-906 (Parker-Hannifin Corp Div O-Ring Division), 7T0565-906 (Freudenberg-Nok General Partnership Dba International Seal Co Inc), 7T0565-906 (Parker-Hannifin Corp Div O-Ring Division), 7T0566-906 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST1946-906 (Freudenberg-Nok General Partnership Dba International Seal Co Inc).
Key specifications for ST1946-906: Cross-Sectional Height: 0.078 INCHES NOMINAL IN; Center Hole Diameter: 0.468 INCHES NOMINAL IN; End Item Identification: C-17A AIRCRAFT A. 2 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.