3/4 (20mm) Union Rubber, Connector Galvanised Union Screw End, Screw Type Rubber Joints, Twin Sphere Thread Union

Double spheres rubber expansion joint (union-screw end) is made by rubber sheets wrapping around a bellows-shape mandrel with two spheres and threaded connection, and it is flexible unit installed in piping system to absorb vibrations and shock, relieve anchor stress, reduce noise, and compensate for misalignment.