What should be replaced to ensure proper seal and function when installing a new wheel bearing?

When installing a new wheel bearing, it's crucial to replace the hub seal, also known as the wheel bearing seal, to ensure a proper seal and optimal function. The hub seal acts as a barrier that prevents dirt, moisture, and other contaminants from entering the wheel bearing assembly. A compromised seal can lead to premature wear, noise, and failure of the bearing due to contaminants infiltrating the grease or lubricant within the assembly.

This replacement is essential because even a small amount of dirt or water can jeopardize the integrity and longevity of the new wheel bearing. Maintaining a proper seal helps keep the lubrication intact, ensuring the bearings function efficiently and effectively throughout their service life.