... misalignment, to reduce the vibration of piping system. PTFE bellows expansion joint through special processing methods, can not be changed ... resistant to various concentrations of acid, alkali, salt. PTFE bellows expansion joint can be used to connect the machines with ... Size: DN80 to DN2500 Temperature: -50~150℃ Our PTFE bellows expansion joints are mainly used for chemical industries, Medicine, food ...