These zero-length reducer vacuum fittings have a 2-1/8 to 1-1/3 inch conflat (CF) flange (both tapped holes). ConFlat (CF) flanges are used for ultra-high vacuum applications. These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out. North American flange sizes are given by flange outer diameter in inches: 1-1/3 ("mini conflat"), 2?, 4?, 6, 8, 10, 12, 13?, 14 and 16?. In Europe and Asia, sizes are given by tube inner diameter in millimeters: DN16, DN40, DN63, DN100, DN160, DN200, DN250. These vacuum fittings are made of corrosive resistant stainless steel.

Conflat Flange (CF) Zero Length Reducer, CF 2.125 inches (Tapped Hole) to 1.33 inches (Tapped Hole), Stainless Steel

CF Flange Size: CF 2 1/8 inch to CF 1-1/3 inch

Common Dimensions:

Large Flange Dimension (Tapped Holes) = CF 2.125 inch 

Small Flange Dimension (Tapped Holes) = CF 1.33 inch

A = 15.75mm

B = 11.90mm

Tube Size = 3/4 inch