National 7840S Oil Seal — SKF/CR Equivalent
| SKF / CR Part No. | Catalog Source |
|---|---|
| 8627 | Verified in both SKF 457012 & National 430i catalogs |
| Dimension | Metric (mm) | Inch |
|---|---|---|
| Shaft diameter | 22.22 | 0.875 |
| Housing bore | 31.72 | 1.249 |
| Seal O.D. | 31.85 | 1.254 |
| Width | 4.75 | 0.187 |
Size 22.22 × 31.72 × 4.75 mm (0.875 × 1.249 × 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 7840S for stock & pricing. Factory direct, global shipping.