2-3/8" OD Alumina tube ( 95% Al₂O₃ material). Such an alumina tube can be used at operating temperatures of 1700 ^oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10^-7 Torr at room temperature. It proves inert to carbon and refractory metals in many severe situations:

 SPECIFICATIONS

Purity	Al2O3 > 95%, SiO2 < 0.25%, CaO+MgO < 0.3%
Density	> 3.91 g /cm3
I.D	2"+/- 0.04 (51.5 +/- 1 mm)
O.D	2-3/8"+/- 0.04 (60.5 +/- 1 mm)
Length	1000 mm (39.4")
Detailed dimension drawing
Max. working temperature	1700 °C (3092°F)
Warning	Please don't use an alumina tube under a vacuum at a temperature > 1500 oC. Please always keep the heating or cooling rate less than 5oC/ minute. Please keep the thermal gradient less than 100oC/ minute to avoid cracking. Please handle the tube carefully. No warranty for the tube.
Application Notes	Please click here to learn how to use and maintain Alumina tubes in MTI high-temperature tube furnace. In order to get longer tube service life, Please use a quartz or alumina crucible to carry the sample, instead of loading the sample directly inside the tube, please click the picture below to choose one crucible boat:

Inspect your delivery:
Please check the package for damages before accepting delivery.
Should damages be found, please keep all packaging materials, take pictures, and report immediately to the carrier/MTI.