This is a pair of a smart sealing assembly for tube vacuum furnaces to tighten both ends of O.D 70mm without any welding and gluing.SPECIFICATIONS 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-5 torr by molecular pump and 10E-2 torr by a mechanical pump Features Made of Stainless Steel with double high-temperature silicon O-rings on each flange. Two flanges on one side. One end flange has a vacuum meter with valve, and another end has valve. 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 70mm O.D tube. 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 upto 10-4 torr For CVD application, please choose anti-corrosive vacuum gauge ( click pic below left 2 ) You can choose the various end of fitting as options ( click here to order separately ) You may click here to order a flowmeter to control gas flowing 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. Optionals Click here to choose flange for tube from 1" to 11" Vacuum Pump & High Vacuum Station
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