... small 5.High specific surface area Yushuntong fumed silica Yushuntong fumed silica has size small, super specific surface area, ... , thickening sex, thixotropy, electrical insulation, etc. Yushuntong fumed silica is mainly used for Silicone Rubber ,Adhesives, Sealants,Coatings, ... Paints and Inks,Rubber ,plastic,etc. Yushuntong fumed silica is a synthetic,amorphous,colloidal silicon dioxide that is ...