1.SINGLE SPHERE expansion rubber JOINT 2.Pressure :PN6/PN10/PN16/ANSI150 ... water,weak acid,etc.Material list: Body: neoprene, EPDM,NBR Lining: chinlon cord fabrics Frame:hard steel wires Flange:carbon steel ... control, Papermaking Pharmacy, Petrochemical Ship Water pump Compressor, Fans, Etc...... Single Sphere expansion Rubber Joint