40x55x8 oil seal

hub seals by size. It is important to find a hub seal that is designed to fit your vehicle's wheel hub assembly to ensure proper sealing and protection of the wheel bearings.
3. Enhanced Performance and Safety A properly functioning hub oil seal contributes not only to the performance of the vehicle but also to the safety of its occupants. When the lubricating oil is contained, the risk of overheating and resulting mechanical failures is significantly reduced. This reliability is particularly vital for high-performance vehicles and those used in demanding conditions.
hub oil seal

The expansion of the brake shoes is facilitated by a cam mechanism, which converts the linear motion of the brake pedal into the radial movement of the shoes. The cam rotates and pushes the shoes outward, increasing contact with the drum surface. Friction between the shoes and the drum generates the necessary braking force to slow down or stop the vehicle.
mechanical drum brake diagram
