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4" x 40" (101 OD x 90 ID x 1000mm L) Alumina Ceramic Tube (99.5%) High Purity - EQ-TA-101D-M1000

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Item Number: EQ-TA-101D-M1000

4" OD larger diameter Alumina tube with high purity 99.5% Al2O3 material. It can be used at operating temperatures to 1700 oC in both oxidizing and reducing atmospheres. Tubes have been evacuated to 10-7 Torr at room temperature.
Purchase Notes: Please make sure the specification of the tube meets your need before making a purchase. Since Nov 10, 2016, we no longer accept return delivery of any tubes due to the fragile nature of the materials. All tubes are not refundable, not exchangeable, nor covered under the warranty (Consumables). We apologize for the inconvenience. Please check the package for damages before accepting the delivery. For more information or damage upon arrival please contact us.


Purity Al2O3 > 99.5%
Density > 3.8 g /cm3
I.D 3.625+/-0.08" (90+/-2mm)
O.D 4+/-0.04" (101.7 +/-2mm)
Note: The outer diameter of the center of the tube is slighly longer.
Length 40 " (1000 mm)
Detailed dimension drawing

Max. working temperature 1700 oC

  • Please don't use alumina tube under vacuum at temperature > 1500 oC.
  • Please always keep heating or cooling rate less than 5oC/ minute.
  • Please keep thermal gradient less than 100oC/ minute to avoid cracking.
  • Please handle the tube carefully.

Application Notes
Ceramic Crucibles ( Alumina, Quartz and Zirconia etc )

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

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3. The prices listed are subject to change without notice.