Neodymium Ring Magnets
Depending on the application, you may need a Neodymium Ring Magnet, or a disc magnet with a hole in it. Although the hole can be placed at nearly any position on the disc, the hole is almost always centrally located. The Ring Magnet is used for fitting the magnet to another item, for example as part of an assembly. Particularly large Ring Magnets can also be used to make use of the parallel magnetic field within the aperture of the ring.
Ring Magnets are magnetized through the height or thickness, not the diameter. This makes the ring magnets attractive to use in removing metal particles from tanks and reservoirs. A ring magnet can be slid over a post to collect unwanted metal filings or chips.
Neodymium Magnets are a composition of Neodymium, Iron and Boron blended, shaped and heat treated to result in a super-strong magnet. If left exposed to the elements, the iron in the magnet will rust. To protect the magnet from corrosion and to strengthen the brittle magnet material, it can be coated with corrosion-resistant nickel plating from .0004 inch to .0008 inch thick.
We stock Neodymium Ring magnets in a variety of sizes for immediate shipment.