... bubbles and other defects Product Application: Fused Silica Rollers can used in glass tempered furnace, floating method glass kiln ,floating method ... industrial raw materials Bowl, uniform material tube, mixing bar, material basin, rotating tube, radar antenna cover, widely used in spacecraft, rocket, missile, radar, Atomic ... conductivity(W/m.k)0.60.6 Silica Rollers used in glass furnace and kilns