CF Vacuum Components

The CF components comply with ISO 3669 standard and up to NW 200 are compatible with ConFlat® flanges and CF flanges of other leading manufacturers.



While there is no general standard for CF flanges, essentially two “standards” have come into use for NW 250: one Anglo-American and one European, both of which are available in our product line. Other standards are used by some other manufacturers and in use at research centres. Please contact us for these types of flanges.

Due to UHV bakeability requirements, sealing of the CF flanges is provided by use of oxygen-free (OFHC) flat gasket rings, which usually can only be used once due to plastic deformation. The tightening pressure is exerted by through-bore screws that have to be tightened uniformly and crosswise to avoid excessive strain. These flange joints are bakeable up to 450 °C.

Standard material of our CF components is 304L (1.4306) stainless steel and 316LN (1.4429). Any other material can be supplied upon request.

All UHV components are cleaned to UHV standard and leak tested down to 1 x 10 EXP -10 mbar l/s.


pdficonOur full range of CF Vacuum Components can be viewed here.