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Vacuum Sealing Assembly for 3" Tube w/ KF-25 Port & 1/4" Feedthrough - EQ-FL-76KF25-FT (D/M)

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This is a pair of smart sealing assembly for 3" vacuum tube furnace to seal both ends of  76 +/- 1.0  mm tube without any welding and gluing.


Package included One Mechanical Pressure Gauge ( Optional: Digital Pressure Gauge), two flanges, two steel sealing rings, four high-temperature silicone O-rings ( 300oC Max.) and six screws
Descriptions 3” flange with various optional  (pls choose from Product Options )
  • One end of the flange has a barbed needle valve,1/4" feedthrough (the nut is with M15*1.5 thread) for thermocouple inserted, and 1/8 NPS valve with installed  Mechanical Pressure Gauge. (if you need  Compact Digital Vacuum Gauge, please choose from product option at extra cost. If you don't need vacuum gauge, please instruct us when you order, we can take it off, but no price deduction )  
  • Another end of the 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.
  • 1/4" in diameter vacuum sealing assembly will connect with 1/4" rubber hose.
  • 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

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