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Rubber bellows, also known as expansion joints, are flexible connectors designed to absorb stress brought about by thermal changes and vibrations in a piping system. They consist of a cylindrical natural or synthetic rubber with flanges on both ends for easy connection. The flexibility of rubber bellows compensates for lateral, torsional, and angular movements to prevent damage in the system. Additionally, they are also a suitable option to offset misalignments. Rubber bellows are available in various lengths and pipe diameter sizes.