Conflat Flange (CF40), 2.75 in. OD, 1.75 in. Inner Diameter, 7.50 in. Long.
Ideal Vacuum replacement CF40 Flange, 2.75 in. OD, 1.75 in Inner Diameter. OD, 7.50 in. long. It inlcudes 12 1/4-28 x 1.5 in. fully threaded screws, nuts and washers, and 2 copper gaskets.. 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"), 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 corrosive resistant stainless steel.
Conflat Flange (CF) Full Nipple, CF 2-3/4 inches, Stainless Steel
CF Flange Size: CF 2-3/4 inch
Common Dimensions: A = 7.5", B= 1.75", Flange Size OD = 2.75"