... flange: Size: DN32MM--DN3000MM (1 1/4"--120") Rubber material: EPDM, NBR, NR, Neoprene Rubber Joint without flange: Size: DN32MM--DN3000MM ... (1 1/4"--120")Rubber material: EPDM, NBR, NR, NeopreneRubber sphere: Single sphere, ... 25)Explosion Pressure MPa(Kgf/cm2)3.0(30)4.8(48)5.5(55)Vacuum KPa(mmHg)53 ... water,hot water,oil,acid,alkali etc Rubber Joint without flange