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Sealing Flange Assembly for 2.5" ( 63-64) Dia. Tube - EQ-FL-63

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This is a pair of smart sealing assemblies for tube vacuum furnace to tighten both ends of O.D 2.5"  ( 63 - 64 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
  • 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 a valve, and another end has a 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
  • 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.

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