

Another symptom of a failing rear hub seal is a grinding or whining noise coming from the rear of the car
. This noise is caused by lack of lubrication in the axle components, leading to increased friction and wear. If left unattended, this could eventually lead to axle failure and a costly repair.Oil seals are generally constructed from materials that can withstand the specific chemical properties of the lubricant they are sealing. Common materials include rubber, silicone, and various elastomers. The design of an oil seal often incorporates a lip that rolls against a shaft or surface, creating a dynamic seal that can accommodate movement while maintaining its sealing capabilities.