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CF Fittings

CF Fittings


CF Vacuum Fittings on this site comply with the ISO 3669 standard and CF Vacuum Fittings up to NW200 are compatible with ConFlat flanges and CF flanges from other leading manufacturers.

While there is no general standard for CF flanges NW250 and over, essentially two “standards” have come into use, one Anglo-American and one European, both of which are available in our product line. Other standards are also used by some other manufacturers and in use at some research centres.

Due to UHV bakeability requirements, sealing of the CF flanges is provided by use of Oxygen-free copper (OFHC) flat gasket rings which usually can only be used once due to deformation. The tightening pressure is exerted by through-bore screws that have to be tightened uniformly and crosswise to avoid excessive strain.

  • Material: 304L stainless steel as standard, 316L and other materials can be supplied upon request
  • Bakeable to 450°C
  • Vacuum rating 1×10-11mbar
  • Wide ranges of elbows, crosses, tees and adaptors are available
  • Tubulated flanges are available for welding to stainless steel tube
CF63 to CF35 Zero Length Flange Adaptor
SKU: ZL6335
CF Zero Length flange adaptors are used to change from one size of tube or flange to another size enabling the fitting together of mismatched components and there is limited space.Manufactured from: 304L Stainless Steel. They are supplied in a plastic bag with protective plastic caps.The CF Zero Length flange adaptors are manufactured to the CF Standard and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11mbarWide range of elbows, crosses, tees and adaptors are available
CF16 Blank Tapped Flange
SKU: f16T
CF Blank flanges are used to cap off the open ports where not required and are also used as a base part to manufacture adaptor fittings, instruments, feedthroughs etc.Manufactured from: 304L Stainless Steel. They are supplied in a plastic bag with a protective plastic cap.The CF Blank flanges are manufactured to the CF Standard and are compatible with other supplier’s product.Material: Stainless SteelBakeable to 450°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are availableTubulated flanges are available for welding to stainless steel tube * European standard, to be used with copper gasket OD 272.7 mm
£ 11.95 11.950000000000001 GBP