These additives are 40 percent stronger than 3M's previous leading high strength glass bubbles and, at 17 microns, are approximately half their size. 3M™ Glass Bubbles iM30K have a density of 0.6 g/cc and an isostatic crush strength of 28,000 psi.
These hollow glass microspheres can be used as a low density filler material ideal for plastic and rubber parts created from injection molding, extrusion processes, and/or other vigorous processing equipment (e.g., Banbury mixers, etc.), offering improved processing over many conventional fillers.
Increased Production Throughput, Lightweighting, Temperature Resistance, Chemical Resistance
Color (unaided eye)
Crush Strength (PSI)
Density Range (g/cc)
0.60 - 0.69
Defense, Paints and Coatings, Rubber and Plastic, Compounding, Transportation
Particle Size (D50 Micron)
Particle Size Range (D50 Micron)
10 - 19
Hollow spheres with thin walls
Supersack (850 lb, 385.5 kg), Small Box (125 lb, 56.7 kg), Small Box (10 lb, 4.5 kg), Large Box (125 lb, 56.7 kg), 1 Gallon Container (3 lb, 1.3 kg), Large Box (850 lb, 385.5 kg)