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 coupling is consist of external rotor ,internal rotor and isolating cover. 

China Magnetic Coupling Manufacturer www.rizinia.com supplies magnetic coupling for scientific experiments or for industrial applications, in kinds of materials such as NdFeB/NIB/neodymium iron boron, etc.
This product is not a toy and is not to be used by children. This product is to be used for scientific experiments or for industrial applications. This product contains strong Neodymium magnet(s) that can be harmful or fatal if swallowed. Strong Neodymium magnets are fragile, they are brittle and will break or chip if they hit a hard surface or are snagged together. Always use the utmost care when handling Neodymium magnets.