3M(TM) GLASS BUBBLES S22

3M Glass Bubbles S22 are hollow glass spheres with a typical density of 0.22 g/cc and an isostatic crush strength of 400 psi. These glass bubbles can be used in a variety of applications including oil and gas drilling and tooling board. The bubbles produce strong, stable voids and low thermal conductivity, helping the coating achieve the necessary compressive strength.