Sapphire tube is made of synthetic sapphire having unique optical, physical, and chemical properties. It is one of the hardest and scratch-resistant minerals. Sapphire also has a high melting temperature and has excellent thermal conductivity and heat resistance. As sapphire has exceptional chemical stability and corrosion resistance, it is capable to withstand harsh environments such as fluorine plasma, acid, and alkaline. It is also ideal for the applications of high-pressure systems and vacuum atmospheres.
Sapphire tube is used in diversified applications such as guides, insulators, flow control, spacers, and often used in analytical instruments in lamp applications that transmit visible, infrared, or ultraviolet light. Most manufacturers offer Sapphire Tubes in a range of sizes and shapes such as slots, holes, and bonded shapes to meet customer's precision specifications and can be held tighter in tolerance than metals.