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Left Side Flange for 2" Processing Tube with 1/4" Feedthrough - EQ-FL-50-FT(L)

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This is the left side of the smart sealing assembly for 2" vacuum tube furnace to seal one end of OD 50-52 mm ( 2")  tube without any welding and gluing.


  • Seal tube by tightening screws on the flange without any welding and glue.
  • Made of Stainless Steel ( SS304)  with double high-temperature silicon O-rings on each flange.
  • Click picture left to order 1/4" diameter thermal couple for the feedthrough at extra cost.
  • Click picture below-righ to order digital vacuum gauge for mechanical gauge replacement.
  • You may order quick connected flange for another end of flange.
  • 1/4"ID Thermal couple or any tube/rod  Feedthrough
  • Mechanical Pressure Gauge
  • 1/8" NPS Valve
  • Barbed Fitting for 10mm O.D. tube.
Vacuum Level
  • Must put a refractory tube block in front of the flange (see picture below) to avoid heat radiation melt silicone O-ring. You order a ceramic block in related products.
  • 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.
Installation Video
Application Notes                                    Sealing flanges for 40 - 42 mm O.D tube                   Vacuum pump and high vacuum station
Click here to order a complete set.         Click pic to choose other size flange     Vacuum Pump & High Vacuum Station

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