National 3404 Oil Seal — SKF/CR Equivalent
| SKF / CR Part No. | Catalog Source |
|---|---|
| 19799 | Verified in both SKF 457012 & National 430i catalogs |
| 19839 | Verified in both SKF 457012 & National 430i catalogs |
| 19966 | Verified in both SKF 457012 & National 430i catalogs |
| 20031 | Verified in both SKF 457012 & National 430i catalogs |
| Dimension | Metric (mm) | Inch |
|---|---|---|
| Shaft diameter | 50.7 | 1.996 |
| Housing bore | 69.67 | 2.743 |
| Seal O.D. | 69.88 | 2.751 |
| Width | 8.25 | 0.325 |
Size 50.7 × 69.67 × 8.25 mm (1.996 × 2.743 × 0.325 in), lip material code H — 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 3404 for stock & pricing. Factory direct, global shipping.