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Quick Clamp Vacuum Sealing Assembly for 80mm dia Tube Furance with KF50 Vaccum Port - EQ-FL-80QC

Sale Price: Starting at USD$479.80
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Product Options

Left, Right, or Both:

This is a quick clamp vacuum sealing assembly for tube vacuum furnace tube of OD 80 mm with no welding or gluing needed.



  • Stainless steel flange with double high-temperature silicon O-rings.
  • Seal tube by tightening screws on the flange with no welding and glue needed.
  • Clamp allows quick access to content inside the furnace.
  • High-temperature silicon O-ring and centering ring at flange cap.
  • 1/4" in diameter vacuum sealing assembly connects with rubber hose.
  • Ideal for any type of tubing: ceramic, glass, quartz and steel pipe.
  •                 Video
    Vacuum Level
    Optional Parts                                
                        1                                 2                                    3                               4                               5
  •   Outer and inner flange dimension 

  • A refractory tube block is required in front of the flange to avoid silicone O-ring melting. 
    Please consider purchasing our ceramic tube block
  • This product is heavy, flange support is required to avoid damage on the furnace tube.
  • Please do not over tighten the three hex screws on the flanges to avoid overpressure incidents. The recommended torque is 35~40 inch-lbs.
  • For liability considerations, MTI does not recommend or endorse the use of any toxic, flammable or corrosive gases with our flange assemblies. Please contact us with any concerns.
    Related Products             Flange for Tube from 1" to 11                      Vacuum Pump & High Vacuum Station
         Stainless Steel Sealing Flange Assembly for 1"-11" Processing Tubes                    Vacuum pump and high vacuum station


Part Number Part Name Qty
1 Inner and Outer Flange 1 pair
2 Pressing Ring 1
3 Centering Ring 1
4 Flange cap with valve 1
5 Hexagon screws 3
6 Clamp 1
7 High-Temperature Silicone O-ring (Black) 1
8 High-Temperature Silicone O-ring (White) 2
9 Gauge (only included for purchase with left flange) 1


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1. Prices listed online are valid for the US market and who pay by credit card only. There will be extra charges for shipping & handling. Prices vary from country to country.
2. We may add extra charges for paper orders and NET 30 terms due to extra labor costs.
3. The prices listed are subject to change without notice.