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One End Closed Quartz Tube ( 50ODx44IDx263L, mm) w/ CF Flange for Ultra-Hi Vacuum upto 10e-7 torr - EQ-CFF-50

In stock
Item Number: EQ-CFF-50
The one end closed quartz tube with CF type flange is designed for Ultra-high vacuum application upto 10e-7 torr via turbo pump.

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.


  • Made of SS 316 
  • CF type  to fit  the included quartz tube only
  • High Temperature Silicone O-ring
Quartz Tube

  • OD:        50mm ±0.5mm (1.97")
  • ID:          44mm ±0.5mm (1.73")
  • Length:   263 mm
  • One end with flat end
  • One end is closed as picture left
  • Max. working temperature 1200oC
Vacuum & furnace optional
  • 3 x e-7 torr via compact turbo pump ( after baking )
  • This tube and flage kit is designed for inserting MTI hybride lab frnace as picture below ( right)
Application Notes
  • Vacuum pressures may only be safely used up to 1000°C
  • Quartz tubes are designed for using under vacuum and Max.positive  pressure must be < 0.2 bars / 3 psi / 0.02 MPa
  • For using the tube  flange kit at high temperature ( 》500oC ),  one ceramic thermal radiation block shall be used.
  • In order get longer tube service life, Please use quartz or alumia crucible to carry sample, instead loading sample directly inside tube, please click picture below to choose one crucible boat:
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 carrier/MTI.

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1. Prices listed online are valid for US market and whom pay by credit card only. There will be extra charges for shipping & handling. Price various from country to country.
2. We may add extra charges for paper order and net30 terms due to extra labor cost.
3. The prices listed are subject to change without notice.