This is a pair of smart sealing assemblies for tube vacuum furnaces to tighten both ends of OD 152 mm (6") diameter tubes without any welding and gluing.

SPECIFICATIONS

Vacuum Level	10E-2 torr by a mechanical pump 10E-5 torr by a small turbopump and  10-6 torr by hi-speed turbopump
Features	Made of Stainless Steel with double high-temperature silicon O-rings on each flange. The left side flange has two gas in/outlet with two-needle valves On-off valve with 1/4" BSPP male/female connector High Pressure SS 1/4BSPP Needle Valve with 1/4" barbed fitting. The right side flange has one KF-40 port and one needle valve 1/4" hose connector Seal tubes by tightening screws on the flange without any welding and gluing. Excellent for any type of tubing: ceramic, glass, quartz, and steel pipe.
Optional Parts	Please click here to order a digital vacuum gauge for precision vacuum control up to 10-4 torr  You can choose the various ends of fitting as options ( click here to order separately ) Please click here to order a digital vacuum gauge for precision vacuum control up to 10-4 torr Warning: The flange must be supported by a frame or fixture ( click Pic below right to order )
Attentions	Must put a refractory tube block in front of the flange (see picture below) to avoid heat radiation melting the 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. It is necessary to provide solid weight supports to the flange if it is mounted on the end of the tube. MTI supplies height-adjustable flange weight support, please click the picture in below to order:
Options	Click here to choose flange for tube from 1" to 11"                                       Vacuum Pump & High Vacuum Station