Easy to use and process
Durable & shock resistant
Very thin sheet available where this is a limitation
Steel backed option, Placam, considerably increases holding force
This is produced by heavily loading ferrite powder of barium or strontium base into a synthetic rubber or PVC matrix and either extruding to shape or calendering into thin sheets. In some cases an orientation is introduced mechanically or by external field but the product is always magnetized by a second operation. The first major application appeared in the early 1960's which was the refrigerator door seal and applications now abound, from simple holding and display products, through to technical ones such as permanent magnet motors and sensors.