Do Neodymium Magnets Rust in Water?

Maybe you are puzzled that neodymium magnets can rust in water. The Nd-Fe-B magnets that can be used in humid environments for a long time or that can be used continuously in water or outdoors without rusting are waterproof neodymium magnets. So will neodymium magnets rust? The answer is no,  as long as rust-resistant neodymium magnets are waterproof magnets. Waterproof neodymium magnets, also known as rust-proof magnets, include options like PVC waterproof magnets and parylene-coated waterproof magnets. In addition to the ordinary electroplating treatment, the surface of waterproof or rust & corrosion resistant NdFeB magnets must be specially coated to completely isolated from water. That's to say waterproof neodymium magnets are coated neodymium magnets.