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Alternate Products
- 2.75 in Shaft Diameter
- 3.751 in Housing Bore
- 0.25 in Overall Width
- Nitrile Rubber (NBR) Lip Material
- Grease Seal
applications
- Install with lip facing outward for maximum dirt exclusion
- Conveyor rollers and vehicle wheels
caution
- Not generally for oil retention
| Construction | HM21 |
| Spring Material | None |
| Lubricant | Grease |
| Installation | Housing Press Fit |
| Misalignment & Runout (In. @ Feet Per Minute) | 0.005@2000 |
| Seal Type | Grease |
| Surface Speed [Nom] | 1,441 ft/min |
| Inch/Metric | Inch |
| Temperature Range [Min] | -65 °F |
| Design | HM21 |
| Housing Bore Dia. | 3.751 in |
| Lip Type | Single Lip |
| Seal Width | 0.25 in |
| Lip Material | Nitrile Rubber (NBR) |
| Operating Temperature [Max] | 210 °F |
| Operating Temperature [Min] | -40 °F |
| Pressure | 3 psi |
| Shaft Dia. | 2.75 in |
| Overall Width | 0.25 in |
| Seal Design | Grease Seal |
| Seal Application | Maximum Dirt Exclusion, Dirt Exclusion And Grease Retention At Slower Speeds |
| Case Design | Metal Case |
| Lip Style | Internal |
| Case Construction | Steel Case w/o Inner Case |
| Solid | Yes |
| Speed | 0.02 ft/min |
| Temperature Range [Max] | 225 °F |
| Cover/Compensation Ring/Plate Required | No |
| Weight | 0.229 LB |
| EAN or UPC | 85311028462 |
| NSN Number | 5330-00-717-1164 |
