2" PN16 Flange Tied Flex Bellows NBR - RBT-PN16-2NBR Rubber Bellows are designed to compensate for misalignment, neutralise movement and reduce noise through vibration in pipelines. They effectively dampen the transmission of sound and vibration and can be used in many applications with various medias including water, oils, chemicals & gases when the correct body material is specified. Other body materials available on request: Butyl Nitrile Hypalon Other Flange drillings are also available on request.