conflat fixed-through blank Varian 2.75" OD

Description

conflat fixed-through blank Varian 2.75" OD. Condition is Used.This is a Varian 2.75” OD CF (ConFlat) “fixed-through blank” widely used for high and ulra-high vacuum (UHV) applications modified with a Swagelok 316 UT YML “Ultra-torr” Vacuum fitting. This component allows a thermocouple of 0.063” in diameter to be interested into any vacuum chamber using a rubber O-ring for . This allows the use of any thermocouple type and length.The seal mechanism is a knife-edge that is machined below the flange's flat surface. As the bolts of a flange-pair are tightened, the knife-edges make annular grooves on each side of a soft metal gasket. The extruded metal fills all the machining marks and surface defects in the flange, yielding a leak-tight seal. The CF seal operates from 760 torr (103 mbar) to < 1 x 10-13 Torr (< 1.3 x 10-13 mbar), and within the temperature range -196° C to 450° C