Rare earth ring magnets can be magnetized in different ways. The most common way is through the thickness and most of these are magnetized that way. I can also request any shape neodymium ring magnet to be magnetized through the diameter. Neodymium cannot be magnetized radially - with a pole on the outside edge and the opposite pole on the inside edge. However, if you really need neodymium ring magnets to have a radial magnetization pattern we can make them in arc segments that you can put together. Note: placing all the arc segments so that all north poles point in the same direction means that they all repel each other and will have to be held in place - usually with epoxy or CA glue. Thanks, George Mizzell, The SuperMagnetMan
Should there be a size you need and don't see, please contact our Sales Department. They will be happy to contact the Manufacturer for a custom quote. Please provide: Exact dimensions, Strength, Quantity and Direction of magnetism.