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Sealing Flange Assembly for 50mm dia.Tube - EQ-FL-50

In stock
Item Number: EQ-FL-50

Quantity Discounts

2 to 5USD$493.05
6 to 9USD$467.10
10 or moreUSD$441.15

This is a pair of smart sealing assembly for tube vacuum furnace to tighten both ends of  O.D 50mm +/- 1.0 mm without any welding and gluing.


Package included One flange with gauge and valve, one flange with valve, two steel sealing rings, four high-temperature silicone O-rings (300oC Max.), and six screws
Vacuum Level 10E-5 torr by molecular pump and 10E-2 torr by mechanical pump
  • Made of Stainless Steel with double high-temperature silicon O-rings on each flange.
  • Two flanges as one side. One end flange has a vacuum meter with valve, and another end has valve.
  • Seal tube by tightening screws on the flange without any welding and glue.
  • 1/4" in diameter vacuum sealing assembly will connect with 1/4" rubber hose.
  • Excellent for any type of tubing: ceramic, glass, quartz and steel pipe.
Optional Parts
Installation Video
Dimensions  Click to enlarge
  • Must put a refractory tube block in front of the flange ( see picture below ) to avoid heat radiation melt silicone O-ring.  You may 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.

Optional Accessories
                                          Sealing flanges for 40 - 42 mm O.D tube                                            Vacuum pump and high vacuum station
Flange with Four 1/4" Feedthroughs       ( click pic to choose other size flange )      Vacuum Pump & High Vacuum Station

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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.