This is a large ring magnet, material is rare earth neodymium. The specific size is 100mm outer diameter, 85mm inner diameter, 3.5mm thickness. This magnet is a big inner diameter magnet, but the size can be custom according to your requirment and product. The direction of magnetzin is thickness and the surface coating plated is silvery white. Although it has a large diameter, its thin shape greatly reduces its magnetic force, so it is incorporated into professional industrial and scientific equipment for some equipment that requires precise and consistent interaction in operation. This may include valves and switches used in industrial process monitoring and measurement equipment, as well as equipment used in related alarm systems.
If you want smaller or bigger large inner dia ring magnets, you can contact us and provide your requirment, we will process sample and give the price for you!
Other big inner dia neodymium ring magnet: