... : DN32MM--DN3000MM (1 1/4"--120") Material:EPDM, NBR, NR Rubber Expansion Joint: Size: DN32MM--DN3000MM (1 1/4"--120") Flange ... , NBR, NR High-pressure Rubber Expansion Joint: Size: DN32MM--DN3000MM (1 1/4"--120")Rubber material: EPDM,NBR, NRRubber sphere: Single sphere, Double sphere Flange: ANSI B16 ... Mediawater,sea water,hot water,oil,acid,alkali etc EPDM double sphere rubber expansion bellow joint