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3M™ Glass Bubbles K25, Large Box (410 lb, 186 kg)

3M ID  98021233162    UPC#  00051135717233     
Glass Bubbles
Glass Bubbles
3M(TM) Glass Bubbles K25
3M™ Glass Bubbles K25 have a density of 0.25 g/cc and an isostatic crush strength of 750 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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    Low density (0.25 g/cc) and high isostatic strength make 3M glass bubbles K25 ideal additives for shallow water buoyancy applications or processing applications where high strength is needed. In addition, like all 3M glass bubbles, K25 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)750
    Density (g/cc)0.25
    Industry - UseMining, Oil and Gas, Paints and Coatings, Transportation
    Particle Size (D50 Micron)55
    Particle Size Range (D50 Micron)50 - 59
    ShapeHollow spheres with thin walls
    Sizes AvailableLarge Box (410 lb, 186 kg)
    Strength (MPa)5.1