... bubbles and other defects Product Application: Fused Silica Rollers can used in glass tempered furnace, floating method glass kiln ,floating method glass ... material basin, rotating tube, radar antenna cover, widely used in spacecraft, rocket, missile, radar, Atomic Energy, electronic, steel, coking, non-ferrous metals, Glass ... conductivity(W/m.k)0.60.6 Silica Rollers used in glass furnace and kilns