Vacuum Sealing Assembly for 5" ( 130 mm) Processing Tube - EQ-FL-125KF25

This is a pair of smart sealing assembly (Flange Lip I.D. 130 mm) for sealing various processing tubes of vacuum tube furnace 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  ( 300°C Max. and six screws).
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. One end has a vacuum gauge, needle valve with barb fitting, and 1/4'' feedthrough, the other end has a KF25 port and needle valve with barb fitting. Seal tube by tightening screws on the flange without any welding and glue. 1/4" rubber hose can be fitted to 1/4" hose connectors at both ends. Designed for MTI GSL1700-100X tube furnaces. The assembly kit will seal 120 mm diameter (472" Dia OD) ceramic and quartz tube.
Optional Parts	Please clicks here to order a digital vacuum gauge for precision vacuum control up to 10-4 torr  For CVD application, please choose anti-corrosive vacuum gauge ( click pic below left 2 ) You can choose the various ends of fitting as options  ( click here to order separately ) You may click here to order a flowmeter to control gas flowing
Installation Video
Warning	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.
Options	Click here to choose flange for tube from 1"  to 11"                        Vacuum Pump & High Vacuum Station