It is a genuine replacement o-ring which is supplied by the original equipment manufacturer for use with Dynabrade power tools. This item is utilized to provide an air-tight seal between connected parts, please make sure to check appropriate diagram of your model for the correct use and location of this component. Over time o-rings tend t...Read moreo deteriorate and crack eventually requiring replacement to maintain peak performance. It is a high-quality part that is made of durable rubber material and it is sold individually.
This bearing is an OEM part direct from Dynabrade. The orbital sander bearing allows the shaft balancer to rotate freely. An allen wrench will be needed to remove the screw that is holding the bearing. This part is made of metal and is sold individually.