Surface preparation is the first step to the flawless performance you have come to expect from DuPont™ Teflon® industrial coatings. One thing you need to consider when preparing to coat is which blast media will work best for your job. DuPont recommends using aluminum oxide for Teflon® coatings, but there are several other options available. This chart explains the applications, specifications, and economic value of aluminum oxide, glass beads, iron shot or grit, ceramic beads, and nut shells as abrasive media.