The design of the lip is crucial; its profile allows it to make optimal contact with the shaft, creating a seal that can accommodate the shaft's rotation. Some rotary lip seals also include a dust lip or exclusion barrier, which helps protect the primary sealing lip from contaminants such as dirt and debris.
2. Lubrication Ensure that wheel bearings are adequately lubricated. If the grease becomes contaminated or dries out, it can compromise the seals’ effectiveness and lead to bearing failure.