National 4503N Oil Seal — SKF/CR Equivalent
| SKF / CR Part No. | Catalog Source |
|---|---|
| 18507 | Verified in both SKF 457012 & National 430i catalogs |
| 18687 | Verified in both SKF 457012 & National 430i catalogs |
| Dimension | Metric (mm) | Inch |
|---|---|---|
| Shaft diameter | 47.9 | 1.886 |
| Housing bore | 69.85 | 2.75 |
| Seal O.D. | 70.23 | 2.765 |
| Width | 11.91 | 0.469 |
Size 47.9 × 69.85 × 11.91 mm (1.886 × 2.75 × 0.469 in), lip material code N — from the National 430i catalog. Always confirm shaft diameter, bore diameter and width against your application before ordering.
Verify dimensions before ordering. Interchange numbers mean the same shaft/bore application, but lip material, spring design or width can differ between brands. Metric sizes can be checked on our oil seal size chart.
Need this seal? Email sales@sealstocks.com with part number National 4503N for stock & pricing. Factory direct, global shipping.