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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, Temperature Resistance, Lightweighting, Chemical Resistance
Color (unaided eye)White, powdery
CompositionSoda-lime-borosilicate glass
Crush Strength (PSI)3,000
Density (g/cc)0.37
IndustriesPaints and Coatings, Transportation, Rubber and Plastic, Compounding, Mining
Particle Size (D50 Micron)45
Particle Size Range (D50 Micron)40 - 49
ShapeHollow spheres with thin walls
Sizes Available4 ft Bag (630 lb, 300 kg), Small Box (10 lb, 4.5 kg), Large Box (630 lb, 300 kg), 1 Gallon Container (1.5 lb, 0.6 kg), Small Box (100 lb, 45.4 kg)
Strength (MPa)20.6