Rubber Expansion Bellow is used to absorb vibration and stress in piping systems. This also provides benefits such as noise reduction and compensation for misalignment. This bellow is commonly used to conceal the junction where the vehicle bends on articulated buses and trams. This is very effective and safe to use. Rubber Expansion Bellow may expand and shrink while maintaining a permanent seal thanks to the concertinaed sides. This bellow is used to keep dust and humidity out of moving mechanical parts.