Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from 0.2 - 5.5μm.
Synthetic transparent/ruby/sapphire bearing
Synthetic Sapphire bearings are made of synthetic sapphire/ruby.
They are largely used in heavily corrosive environments and optical fiber communication because of their anticorrosion, wearable, and fine transmission characteristics.
Balls measuring head jewels are used as insulated measure heads on precise instruments.