PROVIDENCE, R.I., 9 April 2007. A 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, R.I.
Meller Sapphire and Ruby Balls come in 42 different inch and metric sizes from 0.1 millimeters to 1/2-inch diameter. and feature 0.000025-inch (AFBMA Grade 25 tolerance) per ball sphericity (related product).
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.
For more information contact Meller Optics online at www.melleroptics.com.
