Glass Bubbles (hollow micro glass balls) consist of a water-insoluble, chemically stable borosilicate glass of low-alkali content, they are used as light filling material for mixing light filler, adhesive and moulding compound.
Yields lightweight filling compouds
For epoxy, polyester, and vinyl ester resins
Average particle size: ca. 65 µm
The volume details are intended to assist in judging the amount supplied. These details refer to the loose bulk amount. The contents may become compressed during transport or storage.
More information see 3M