Ceramic Channel-Type Magnets are made in a variety of simple and complicated shapes and sizes. Ceramic Holding Assemblies provide a strong magnetic field. The ceramic magnet material possesses high coercive force and resists demagnetization from heat, vibration, and electrical fields. Most of our ceramic assemblies are permanently embedded in epoxy plastic. They are typically more economical than Alnico assemblies and can be used in temperatures up to 180°F. Temperatures higher than 180°F can cause the standard epoxy that holds the magnet material to fail.