SAPPHIRE AND RUBY BALLS ARE TINY, TOUGH, AND CHEMICALLY INERT

Description

A full line of precision miniature sapphire and ruby balls for use as check valve elements, bearings, spacers and other applications requiring a highly spherical, wear-resistant, and chemically inert ball are available from Meller Optics, Inc. of Providence, Rhode Island. Meller Sapphire and Ruby Balls are offered in 42 different inch and metric sizes from 0.1 mm to 1/2" dia. and feature 0.000025” (AFBMA Grade 25 toler-ance) per ball sphericity. Exhibiting Moh 9 hardness, they are ideally suited for use as check valve elements, bearings, and spacers in scientific and medical devices requiring a wear-resistant and chemically inert sphere. Impervious to common acids, alkalis, solvents, and bodily fluids, Meller Sapphire and Ruby Balls are fracture-resistant and the red ruby balls are easier to see than the clear sapphire, where high visibility is important. They have finishes of 20-10 scratch-dig or better and can be precision ground and polished into inexpensive plano-convex lenses if required. Meller Sapphire and Ruby Balls are priced according to material, size, and quantity; delivered from stock. Samples, literature, and pricing are available upon request.
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