rubber joint 1,DN15-DN100 2,easy installation and maintenance 3,free samples can be sent 4,ISO9001:2008 certificate We are specialized rubber joint. Rubber expansion joint, is also known as shock absorber, pipe shock absorber, shock proof box and soft joint. It is a pipe joint of high-flexibility, high-gas tightness, resistance to medium and climate. Rubber Expansion Joint has five types: single ...