The material characteristics of the flanges, seals, screws, and nuts are selected to provide throughout a wide temperature range. Rotatable and nonrotatable flanges in sizes from mini 1-1/3 to 4-5/8 inches (34 to 117 mm) are available with several bore sizes to fit a range of tube diameters.
They use a flat gasket placed between two knife edges to provide a vacuum tight seal. Mating flanges have identical profiles, i.e., they are sexless, eliminating the need to store two types or worry about compatibility.
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 to 450 °C for bake-out.
Vacuum Fittings Are Made of Stainless Steel
ConFlat (CF) Flanges are used for ultra-high vacuum applications
Has One Rotatable And One Fixed 2-3/4 Inch Conflat (CF) Flanges
* ConFlat (CF) Flanges are used for ultra-high vacuum applications
Specifications:

Package:
1*Conflat Flange Stainless Steel Fitting