National 343123 Oil Seal — SKF/CR Equivalent
| SKF / CR Part No. | Catalog Source |
|---|---|
| 9900 | Verified in both SKF 457012 & National 430i catalogs |
| Dimension | Metric (mm) | Inch |
|---|---|---|
| Shaft diameter | 25.4 | 1 |
| Housing bore | 39.7 | 1.563 |
| Seal O.D. | 39.85 | 1.569 |
| Width | 4.75 | 0.187 |
Size 25.4 × 39.7 × 4.75 mm (1 × 1.563 × 0.187 in), lip material code S — 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 343123 for stock & pricing. Factory direct, global shipping.