FL-216 is a pair of hermetic flange assemblies for the GSL-1100X-8.5 series furnace and 8.5" (216mm) OD processing tubes. 

SPECIFICATIONS

Features	One pair of hinged hermetic flange assemblies with a load-lock door for quick sample loading.  Material: 304 stainless steel Left flange: One diaphragm pressure gauge, One needle valve, and 1/4" barbed gas inlet.  Right flange: One KF25 port, one needle valve, and 1/4" barbed gas outlet. O-rings: two sizes of silicone O-rings are included (max 250°C). Two pairs of Silicone Rubber O-rings with 224.6 O.D. x 213 I.D. x 5.8 Thickness, mm One pair of Silicone Rubber O-rings with 240.6 O.D. x 230 I.D. x 5.3 Thickness, mm Bolts: 6 bolts for flange mounting. Designed for MTI GSL-1100X-8.5 Series tube furnace.
Vacuum level	10E-2 torr by a mechanical pump 10E-4 torr by a small turbopump and  10-6 torr by hi-speed turbopump
Flange Dimension	218 mmmm I.D of the flange, designed for 216 mm OD tube
Warning	A refractory tube block must be placed in front of the flange (see picture below) to prevent O-ring melting from radiation heating. 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