National 221820 Oil Seal — SKF/CR Equivalent
| SKF / CR Part No. | Catalog Source |
|---|---|
| 692693 | Verified in both SKF 457012 & National 430i catalogs |
| 7000 | Verified in both SKF 457012 & National 430i catalogs |
| 7004 | Verified in both SKF 457012 & National 430i catalogs |
| 7012 | Verified in both SKF 457012 & National 430i catalogs |
| Dimension | Metric (mm) | Inch |
|---|---|---|
| Shaft diameter | 18 | 0.709 |
| Housing bore | 30 | 1.181 |
| Seal O.D. | 30.2 | 1.189 |
| Width | 7 | 0.276 |
Size 18 × 30 × 7 mm (0.709 × 1.181 × 0.276 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 221820 for stock & pricing. Factory direct, global shipping.