These are bored Conflat flange, CF 3-3/8 inch, Bored 1.5 in, Through Holes, Non-Rotatable, 3.375 inches CF-F, Stainless Steel. A small pipe tubing can be welded to the gasket side of the flange. These 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"), 2¾, 4½, 6, 8, 10, 12, 13¼, 14 and 16½. 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 corrosion resistant stainless steel. Bored Conflat Flange, CF 3-3/8 inch, Bored 1.5 in, 8 Through Bolt Holes, Non-Rotatable, 3.375 inches CF-F, Stainless Steel

• CF Flange Size: CF 3 3/8, 3.375 inch

Common Dimensions:

• Flange Size OD = 3 3/8"
• (A)=3 3/8" (85.725mm)
• (B)=1.5" (38.1mm)
• (D)=2 13/16" (72.39mm)