The O-Ring, cataloged under National Stock Number 5331-01-534-4285, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-534-4285 |
| Primary Part Number | 2303775 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Cross-Sectional Height | 3.53 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 36.0 MILLIMETERS NOMINAL MM |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 17KP302 | Oshkosh Defense Llc (USA) |
| 2303775 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 50028713 | Rheinmetall Bae Systems Land Limited (GBR) |
| Reference | Meaning |
|---|---|
| 10099836 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 17KP302 | 5/9 Secondary reference Oshkosh Corp |
NSN 5331-01-534-4285 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-534-4285 has 3 manufacturer part numbers on file: 17KP302 (Oshkosh Defense Llc), 2303775 (Caterpillar Inc Div Caterpillar Defense), 50028713 (Rheinmetall Bae Systems Land Limited).
Key specifications for 2303775: Cross-Sectional Height: 3.53 MILLIMETERS NOMINAL MM; Special Features: INJECTOR GROUP SEALS; Center Hole Diameter: 36.0 MILLIMETERS NOMINAL MM; End Item Identification: CATERPILLAR DIESEL ENGINE. 3 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.