Rubber Expansion Joint is also called shock absorber,pipe shock absorber,shock proof box and soft joint etc. It use the advanced foreign productive skill,and its working pressure is bigger than the general rubber joint . Due to the inner glue received the high pressure and made the nylon combined with the glue. The characteristic : the inner and outer glue is one integrated mass, none-sealing , the label grave on the rubber body. The rubber joint is soft connector of metal pipe. It is make up of inner glue,jinlun curtain thread, outer glue and floating metal flange. It can resistance the high temperature ,good flexibility, huge displacement, reduce the noise , easy install and so on. Beacause its integral function ,flexible rubber joint can be widely used in chemical industry, construction, water supply, drainage, petroleum, weight and light industry, refrigeration, health, water heating, fireproof , power and so on.