... prior&timely delivery 4.application:industrial magnet ring magnets1.Material of NdFeB magnet: Magnet N-( N30-------N52), working temperature:80 degree Celsius ... ), working temperature:220 degree Celsius.2.3.Magnet shape: Block,Ring, Arc,Disc, Cylinder, Rod,Bar, Cube,Sphere,Strip etc.4 ... and with the most that we can do for you. ring magnets,Sintered NdFeB Motor magnet