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3M™ Glass Bubbles K1

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.

Typical Properties

 Capabilities‎‎ Temperature Resistance,‎ Lightweighting,‎ Chemical Resistance
 Color (unaided eye)‎‎ White, powdery
 Composition‎‎ Soda-lime-borosilicate glass
 Crush Strength (PSI)‎‎ 250
 Density (g/cc)‎‎ 0.125
 Industries‎‎ Paints and Coatings,‎ Transportation,‎ Insulation and Buoyancy,‎ Construction,‎ Mining
 Particle Size (D50 Micron)‎‎ 65
 Particle Size Range (D50 Micron)‎‎ 60 - 69
 Shape‎‎ Hollow spheres with thin walls
 Sizes Available‎‎ Small Box (5 lb, 2 kg),‎ Bulk Sea Container with Liner,‎ 4 ft Bag (180 lb, 81.6 kg),‎ Large Box with Special Liner (210 lb, 95.4 kg),‎ Large Box (180 lb, 81.6 kg),‎ Bulk Trailer,‎ Large Box (210 lb, 95.2 kg),‎ Large Box (225 lb, 102 kg),‎ Small Box (40 lb, 18.1 kg),‎ 1 Gallon Container (0.5 lb, 0.2 kg),‎ Large Box (660 lb, 300 kg)
 Strength (MPa)‎‎ 1.7