Glass microsphere

Glass bubbles are used as fillers in polymer composites. There are many kinds. Try calling, "Composites One", a major supplier to the composites industry.

Bob

Thanks Bob

Actually the reason we are looking at Glass bubbles is due to High crush strength required. There are a few of them having less PSI ( < 10000 PSI)

anyways thanks again for the direction

Potters Ballotini is fabricating these too.

RHABE

In the USA try Potters Industries. Spheres like that are sometimes used in explosives...

Have a look at Trelleborg Emerson & Cuming:

http://www.trelleborg.com/en/Products-and-Solutions/Industries/Offshore-Oil-and-Gas/Glass-Microspheres-/

Marcus

Depending on the volume needed you can sort them by doing a proof test to a higher pressure. As the pressure mounts the low crush ones will break and drop to the bottom of the fluid. You may also relate their specific gravity to wall thickness. Possibly a symmetry test would be useful as well. You might then be able to sort them non destructively with a set of low specific gravisty fluids or dense gasses.

Since off center ones will be weak, you also need to sort out the concentric ones. I am not sure how they make them. Someone told me once they use centers of one glass that make a gas and a shell of a another gas??

Saint-Gobain Companies. There are several business units with hollow micro-spheres. It will depend on your end use and specification.

Saint-Gobain Proppants (www.proppants.saint-gobain.com) has ceramic spheres with crush strangth to 15,000.