The O-Ring, cataloged under National Stock Number 5331-01-686-2903, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps). Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-686-2903 |
| Primary Part Number | Q37043Z5048 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps) |
| Status | ACTIVE |
| Cross-Sectional Height | 9.0 MILLIMETERS NOMINAL MM |
| Color | BLACK |
| Center Hole Diameter | 75.0 MILLIMETERS NOMINAL MM |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| Q37043Z5048 PRIMARY | Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps) (USA) |
| REY1620969Z8 | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Q37043Z5048 | Parker Hannifin Gmbh O-Ring Division (DEU) |
| Reference | Meaning |
|---|---|
| 7377582-59 | 3/9 Design control — primary reference Naval Sea Systems Command |
NSN 5331-01-686-2903 is a O-Ring, manufactured by Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps), classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-686-2903 has 3 manufacturer part numbers on file: Q37043Z5048 (Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps)), REY1620969Z8 (Trelleborg Sealing Solutions Us, Inc.), Q37043Z5048 (Parker Hannifin Gmbh O-Ring Division).
Key specifications for Q37043Z5048: Cross-Sectional Height: 9.0 MILLIMETERS NOMINAL MM; Color: BLACK; Special Features: OPERATING TEMPERATURE IS -20 TO 200 CELSIUS DEGC; Center Hole Diameter: 75.0 MILLIMETERS NOMINAL MM. 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.
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.