Magnetic coupling is a new kind of coupling,which connects motor and machine by permanent magnetic force.They work in the sealless magnetic drive pumps,which transporting volatile,flammable,explosive and toxic solutions with no leakage. The appearance of Magnetic coupling solved thoroughly the leak problems existed in dynamic sealing of certain mechanical devices.Magnetic coupling are widely used in various industries and fields,such as chemical,papermaking,foodstuff, pharmacy,and so on. Magnetic coulpling is consist of external rotor,internal rotor and isolating cover. Ichoice company can design and produce different Magnetic couplings according to clients' requests.