National 3638 Oil Seal — SKF/CR Equivalent
| SKF / CR Part No. | Catalog Source |
|---|---|
| 11111 | Verified in both SKF 457012 & National 430i catalogs |
| 11122 | Verified in both SKF 457012 & National 430i catalogs |
| 11417 | Verified in both SKF 457012 & National 430i catalogs |
| Dimension | Metric (mm) | Inch |
|---|---|---|
| Shaft diameter | 28.57 | 1.125 |
| Housing bore | 41.25 | 1.624 |
| Seal O.D. | 41.35 | 1.628 |
| Width | 4.83 | 0.19 |
Size 28.57 × 41.25 × 4.83 mm (1.125 × 1.624 × 0.19 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 3638 for stock & pricing. Factory direct, global shipping.