Glass Micro Balloons

General purpose lightweight filler for use in polyurethane resins.

When blended with resin, these hollow glass spheres make a lightweight, sandable filler. The average bubble is less than 70 microns, about a quarter of a grain of sand. Select this unique size and shape for a variety of reasons:

• Tiny spheres blend readily for an evenly spreadable paste.
• They are adaptable to a variety of production processes such as spraying, casting, and molding.
• Low density reduces weight, lowers costs, and enhances properties for finished parts.
• Spheres provide lower viscosity, improved flow and reduce shrinkage and warp.

Add filler after adding catalyst to resin.

Mix ratio is 3:1 (filler to resin by volume).