Quartz Block: 90 mm Diameter (one pair) for 100mm O.D Tube Furnace - QTB90
Quartz Block: 90 mm Diameter (one pair) for 100mm O.D Tube Furnace - QTB90
Minimum Order: $20 (equipment), $100 (crystals)
Low stock: 8 left
SKU: : \QTB90
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In a tube furnace, thermal blocks primarily function to localize heat concentration around the furnace tube, preventing excessive heat from escaping to the surrounding components like the furnace casing and flanges, thus ensuring a more uniform temperature distribution within the tube and protecting critical seals from damage due to extreme heat; essentially acting as a heat shield and maintaining the integrity of the furnace system by minimizing thermal stress on the surrounding parts.
MTI corporation provides the high quality quartz blocks for high temperature tubing furnaces. Compare with the conventional ceramic blocks, such quartz thermal blocks have no detrimental impacts on the vacuuming. At the mean while, they provide you a clean environment in the chamber.
- Diameter: 90 mm (3.54")
- Length: 60 mm (2.36")
- Fit EQ-OTF-1200X4, EQ-OTF-1200X4-II Tube Furnaces.
![]() installation sequence |
![]() inside the processing tube |
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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.
Warning:
Do NOT use the quartz block with any kind of Alumina tube or Mullite tube. For more information, please contact MTI Corp.
No Warranty:
Kindly note this item is a consumable part, and not covered by warranty. Make sure to inspect for defect(s) thoroughly before use.


