3M(TM) GLASS BUBBLES K20HS

3M™ Glass Bubbles K20HS are hollow microspheres made from soda-lime borosilicate glass, with a true density of 0.20 g/cm³ and an isostatic crush strength of 750 psi (52 bar). They offer properties such as density reduction, improved buoyancy, reduced thermal conductivity, the potential for higher filler loading, and lower VOC levels for paints and coatings. These microspheres also feature a good strength-to-density ratio, a reduced dielectric constant, temperature resistance, and chemical stability with inertness.