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3M™ Glass Bubbles K37

Glass Bubbles
Glass Bubbles
3M(TM) Glass Bubbles K37
K37 glass bubbles have a density of 0.37 g/cc and an isostatic crush strength of 3000 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
  • Lower viscosity, improved flow
  • Increased filler loading, reduced cost
  • VOC reduction
  • Chemical stability and inertness
  • Reduced dielectric constant
  • Thermal conductivity reduction
  • Temperature resistance
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Typical Properties

CapabilitiesIncreased Production Throughput, Lightweighting, Temperature Resistance, Chemical Resistance
Color (unaided eye)White, powdery
CompositionSoda-lime-borosilicate glass
Crush Strength (PSI)3,000
Density (g/cc)0.37
IndustriesMining, Paints and Coatings, Rubber and Plastic, Compounding, Transportation
Particle Size (D50 Micron)45
Particle Size Range (D50 Micron)40 - 49
ShapeHollow spheres with thin walls
Sizes Available1 Gallon Container (1.5 lb, 0.6 kg), Small Box (100 lb, 45.4 kg), Small Box (10 lb, 4.5 kg), Large Box (630 lb, 300 kg), 4 ft Bag (630 lb, 300 kg)
Strength (MPa)20.6