This is the right side of the smart sealing assembly for a vacuum tube furnace to seal one end of OD 60 mm tube without any welding and gluing.

SPECIFICATIONS

Structure
Features	Seal the 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. Excellent for any type of tubing: ceramic, glass, quartz, and steel pipe. Vacuum level: 10-5 torr by molecular pump and 10-2 torr by a mechanical pump
Descriptions	One end flange has a barbed needle valve,1/4" feedthrough for thermocouple inserted, and 1/8 NPS valve with installed Mechanical Pressure Gauge. (if you need a Compact Digital Vacuum Gauge, please choose from the product option at extra cost. If you don't need a vacuum gauge, please instruct us when you order, we can take it off, but no price deduction ) Another end flange has a KF25 port with a barbed needle valve. You may need a KFD25 angle valve before connecting the vacuum port to the vacuum pump. Please choose the KF25 angle valve at the related product below. Seal the tube by tightening the 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 Desk-top Quartz Tube Furnace. Excellent for any type of tubing: ceramic, glass, quartz, and steel pipe.
Warning	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.
Optional	Click here to order another size vacuum flange.              Click pic to order KF40 to KF25  adaptor if you need a KF40 port