Spacer Application Glass Beads Potters Industries supplies solid glass spheres used to establish bond line thickness in adhesive bonding. These products meet the requirements of Hughes standard HMS20-1776B and SCGMS-53004. Composition Soda-lime glass Appearance Colorless sphere Specific Gravity 2.5 Refractive Index 1.51 Softening Point 704°C Product Specifications: Spacer Application Glass Beads MSDS: SPHERIGLASS® Solid Glass Spheres Home | Site Map | Legal Notice | Contact Us | Adobe® Acrobat® Reader