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4/30/2013  Sapphire Balls Offer High Wear, Heat Resistance 
Sapphire and ruby balls that come in 42 precise small sizes and offer high wear and chemical resistance, and can withstand thermal and environmental shock, are available from Meller Optics, Inc. of Providence, Rhode Island.

Meller Sapphire and Ruby Balls feature Moh 9 hardness, are impervious to most chemicals, solvents, and detergents, and have a 2,000C melting point. Suitable for a wide range of applications because of their durability and stability, they have surface finishes of 20-10 scratch-dig or better, and can be drilled and precision ground into plano-convex lenses, if required.

Available in 42 inch and metric sizes from 0.1mm to 0.5 dia., Meller Sapphire and Ruby Balls have a 0.2 coefficient of friction and a good refraction index of 1.76 microns at 20C. Applications include ball check valves, scanners, ball and roller bearings, gauge, probe, and stylus tips, chemical and medical valves, and fiber optic and endoscope lens systems.

Meller Sapphire and Ruby Balls are priced according to material, size, and quantity; delivered from stock. Samples and price quotations are available upon request.
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