Size = outside diameter * inside diameter, length = 100mm, quantity = 50pcs, quartz capillary glass tubes purity ≥ 99.99%. (Please contact us for other sizes and quantities)
With a maximum temperature resistance of 1200°C and a minimum temperature resistance of - 198°C, they can work stably in extremely high and low temperature environments, and are suitable for high-temperature melting and ultra-low-temperature experiments.
Good electrical conductivity, dielectric constant ≥ 3.7, is an excellent insulating material, can be used for electronic equipment insulation parts, thermal conductivity 1.4W/(m・°C), heat conduction characteristics can be controlled.
 Mohs hardness level 7, high hardness, anti-wear, coefficient of thermal expansion 5.5×10-⁷cm/cm・°C, thermal expansion and contraction changes are small, in the temperature cycle environment, the structure and size of more stable.
Optical transmittance, good transmittance of light, in the manufacture of optical instruments, can ensure the efficiency and stability of light transmission, help optical applications.