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3M™ Glass Bubbles K20HS are hollow microspheres made of soda-lime borosilicate glass with a true density of 0.20 g/cm³ and an isostatic crush strength of 750 psi / 52 bar.
The K20HS Glass Bubbles can be compounded in a variety of thermoset polymers to reduce the density of the composite. These composites can be incorporated into deep sea syntatctic foam for buoyancy modules to improve the uplift properties of a system at minimal foam volumes. They offer good strength-to density ratio, making them suitable for a variety of applications: buoyancy, coatings, adhesives, sealants, and thermoset resins systems.
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WATER AND OIL RESISTANT PROVIDING BETTER UTILITY IN UNDERWATER APPLICATIONS
3M™ Glass Bubbles S15 are hollow glass spheres with a density of 0.15 g/cc and an isostatic crush strength of 300 psi. These glass bubbles are designed for a number of industries, including auto body repair fillers and syntactic foams for deep water buoyancy. The bubbles produce strong, stable voids and low thermal conductivity, helping the coating achieve the necessary compressive strength.
WHITE GRADE CERAMIC MICROSPHERES