These black epoxy coated discs are suitable for applications that require extra corrosion resistance. Epoxy is the most corrosion resistant of the neodymium coating options. The coating gives the magnets a deep, black finish. Epoxy coated magnets are a good option if you will be using the magnets outdoors or in a humid environment.
This size is also available in grade N52 as part number DC2-N52
and in grade N42 with our standard Nickel plating as part number DC2