Alumina Ceramic Rotor & Stator: Longer Wear Life for Flotation Cells High alumina ceramic rotor and stator units are the upgrade buyers reach for when rubber or polyurethane liners wear out too fast on abrasive, high-density slurry. With a 92% Al2O3 working surface, the flow channels keep their profile far longer, so your flotation cells stay on spec between rebuilds. Match the liner material to your duty Liner material Best suited to Wear life Typical demand by market High