Kemet 7 x 12mm Abracap Round Rubber Holder 7R

Abracap rubber holder is flexible has a longitudinal slit so that when pushing the cap on, air can escape and a used cap can be slit with a knife and removed from the rubber holder. Slightly wet the surface of the rubber holder prior to pushing on the abrasive cap to ensure that the cap, which has a glue surface on the inside, firmly sticks to the rubber holder.