polished and glazed Alumina plates with white, black, red, pink colors enduring high temperature and high voltage Alumina Al2O3 purity:90%, 95%, 99%, 99.5%, 99.7% Al2O3 Endure high temperature of 1500 degrees Celsius Various shapes: plungers, rings, plates, bars, discs ,balls and pistons Colors: white, black, pink and brown Density: from 3.5 to 3.95g/cm3 High strength: bending strength more than ...