... High purity fused silica sandINTRODUCTION & CHARACTORS:Fused Silica is produced from high purity natural silica stone, melted at extremely temperature to create high purity, high SiO2 composition, high ... in refractories, epoxy molding compounds, investment castings, ceramics, shell moulds, silicon rubbers, and electrical insulators. SPECIFICATION FOR YOUR REFERENCE: SPECIFICATIONS:Size ...