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3M ID  70070182137    UPC#  00021200673382    CAT#  67338     
Glass Bubbles
Glass Bubbles
3M™ Glass Bubbles K1 have a density of 0.125 g/cc and an isostatic crush strength of 250 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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    3M glass bubbles K1 are ideal additives for shallow water floatation devices like buoys and moorings as well as buoyancy modules. They have the lowest density of any 3M glass bubble (0.125 g/cc), isostatic crush strength good to 250 psi and are low in cost. Like all 3M glass bubbles, K1 bubbles are compatible with thermoset resins like polyurethane and epoxy, and are virtually insoluble in water.


    CapabilitiesChemical Resistance, Lightweighting, Temperature Resistance
    Color (unaided eye)White, powdery
    CompositionSoda-lime-borosilicate glass
    Crush Strength (PSI)250
    Density (g/cc)0.125
    Industry - UseConstruction, Mining, Paints and Coatings, Transportation
    Particle Size (D50 Micron)65
    Particle Size Range (D50 Micron)60 - 69
    ShapeHollow spheres with thin walls
    Sizes AvailableLarge Box (210 lb, 95.2 kg)
    Strength (MPa)1.7