

The hub axle seal's primary function is to keep the axle lubricated. The lubricant, often a type of grease or oil, is crucial for reducing friction between moving parts. Without proper lubrication, the components can suffer from overheating and excessive wear, potentially leading to significant damage and costly repairs. Additionally, the seal prevents water and dirt from entering the axle assembly, which can cause rust and corrosion, further jeopardizing the integrity of the axle.
In addition to the materials, gully drain covers also vary in design
. Some are grates that allow water to flow freely while filtering out debris, while others are solid plates that provide a flat surface. There are also designs that incorporate a mesh pattern to enhance drainage capacity while still maintaining a safe walking surface.