Rubber bellows play an important role in protecting mechanical components from foreign particles. They can expand and collapse to accommodate changes in pressure or movement. It is important to choose a bellow material that is resistant to the outside atmosphere and ozone, as well as any oils, grease, or lubricants that may come into contact with it. In the automotive industry, rubber bellows are particularly crucial for the steering system of cars, as they help keep dirt and debris out of the steering rack. They come in various sizes, shapes, and materials, including elastomer-coated fabrics and rubbers, to suit different application requirements.