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Right Side Vacuum Sealing Flange for 3" Tube w/ KF-25 Port- FL-76-KF25R

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This is the right side of smart sealing assembly for 3" vacuum tube furnace to seal 76 +/- 1.0  mm tube without any welding and gluing.


Package included One flange, one steel sealing rings, two high-temperature silicone O-rings ( 300oC Max.) and three screws
Descriptions 3” right side flange 
  • This flange has a KF25 port with a barbed needle valve. You may need KFD25 angle valve before connecting the vacuum port to the vacuum pump. Please choose the KF25 angle valve at the related product below.
  • Seal tube by tightening screws on the flange without any welding and glue.
  • Designed for MTI OTF-1200X Desktop Quartz Tube Furnace.
  • Excellent for any type of tubing: ceramic, glass, quartz, and steel pipe.
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 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 gasses with our flange assemblies. Please contact us with any concerns.
       Sealing flanges for 40 - 42 mm O.D tube click pic to choose other size flanges 

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