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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

CF100 to KF50 Tubulated Adaptor SKU: KA1050 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF150 to KF25 Tubulated Adaptor SKU: KA1525 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF150 to KF40 Tubulated Adaptor SKU: KA1540 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components. Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps. The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product. Material: 304L Stainless Steel Bakeable to 150°C Vacuum rating 1×10-11 mbar Wide range of elbows, crosses, tees and adaptors are available	CF150 to KF50 Tubulated Adaptor SKU: KA1550 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available
CF16 to KF10 Tubulated Adaptor SKU: KA1610 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF16 to KF16 Tubulated Adaptor SKU: KA1616 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF35 to KF10 Tubulated Adaptor SKU: KA3510 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF35 to KF16 Tubulated Adaptor SKU: KA3516 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available
CF35 to KF25 Tubulated Adaptor SKU: KA3525 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF35 to KF40 Tubulated Adaptor SKU: KA3540 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF63 to KF25 Tubulated Adaptor SKU: KA6325 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF63 to KF40 Tubulated Adaptor SKU: KA6340 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available
CF63 to KF50 Tubulated Adaptor SKU: KA6350 CF to KF Tubulated reducing adaptors are used to change from a CF flange to a KF mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to 10-10 mbar. They are supplied in a plastic bag with protective plastic caps.The CF to KF Tubulated Adaptors are manufactured to the CF & KF Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF100 Plate Nut NOTE: A set of 8 x nut plates are required per flange. Price shown is per nut plate, not set. SKU: PN100 CF Nut Bolt & Washers with Silver Plated Bolts are used to Clamp two flanges together and compress them against the copper gasket creating a vacuum seal for applications involving Baking. The Silver Plating allows for easy disassembly after Baking Manufactured from: Stainless Steel. And Silver Plating CF Nut Bolt & Washer (Silver Plated Bolts) sets are supplied in sealed plastic bags. CF Nuts, Bolts & Washers (Silver Plated Bolts) are manufactured to the ISO standard and are compatible with other supplier’s products £ 4.81 4.8100000000000005 GBP	CF150 Plate Nut NOTE: A set of 10 x nut plates are required per flange. Price shown is per nut plate, not set. SKU: PN150 CF Nut Bolt & Washers with Silver Plated Bolts are used to Clamp two flanges together and compress them against the copper gasket creating a vacuum seal for applications involving Baking. The Silver Plating allows for easy disassembly after Baking Manufactured from: Stainless Steel. And Silver Plating CF Nut Bolt & Washer (Silver Plated Bolts) sets are supplied in sealed plastic bags. CF Nuts, Bolts & Washers (Silver Plated Bolts) are manufactured to the ISO standard and are compatible with other supplier’s products. £ 5.00 5.0 GBP	CF16 Plate Nut NOTE: A set of 3 x nut plates are required per flange. Price shown is per nut plate, not set. SKU: PN16 CF Nut Bolt & Washers with Silver Plated Bolts are used to Clamp two flanges together and compress them against the copper gasket creating a vacuum seal for applications involving Baking. The Silver Plating allows for easy disassembly after Baking. Manufactured from: Stainless Steel. And Silver Plating CF Nut Bolt & Washer (Silver Plated Bolts) sets are supplied in sealed plastic bags. CF Nuts, Bolts & Washers (Silver Plated Bolts) are manufactured to the ISO standard and are compatible with other supplier’s products. £ 2.24 2.24 GBP
CF35 Plate Nut NOTE: A set of 3 x nut plates are required per flange. Price shown is per nut plate, not set. SKU: PN35 CF Nut Bolt & Washers with Silver Plated Bolts are used to Clamp two flanges together and compress them against the copper gasket creating a vacuum seal for applications involving Baking. The Silver Plating allows for easy disassembly after Baking Manufactured from: Stainless Steel. And Silver Plating CF Nut Bolt & Washer (Silver Plated Bolts) sets are supplied in sealed plastic bags. CF Nuts, Bolts & Washers (Silver Plated Bolts) are manufactured to the ISO standard and are compatible with other supplier’s products. £ 2.36 2.36 GBP	CF63 Plate Nut NOTE: A set of 4 x nut plates are required per flange. Price shown is per nut plate, not set. SKU: PN63 CF Nut Bolt & Washers with Silver Plated Bolts are used to Clamp two flanges together and compress them against the copper gasket creating a vacuum seal for applications involving Baking. The Silver Plating allows for easy disassembly after Baking Manufactured from: Stainless Steel. And Silver Plating CF Nut Bolt & Washer (Silver Plated Bolts) sets are supplied in sealed plastic bags. CF Nuts, Bolts & Washers (Silver Plated Bolts) are manufactured to the ISO standard and are compatible with other supplier’s products. £ 4.21 4.21 GBP	CF100 to ISO100 Adaptor SKU: SA1010 CF to ISO Tubulated reducing adaptors are used to change from a CF flange to an ISO mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to10-10mbar. They are supplied in a plastic bag with protective plastic caps.The CF to ISO Tubulated Adaptors are manufactured to the CF & ISO Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available	CF100 to ISO160 Adaptor SKU: SA1016 CF to ISO Tubulated reducing adaptors are used to change from a CF flange to an ISO mating flange enabling the fitting together of mismatched components.Manufactured from: 304L Stainless Steel. Helium Leak tested to10-10mbar. They are supplied in a plastic bag with protective plastic caps.The CF to ISO Tubulated Adaptors are manufactured to the CF & ISO Standards and are compatible with other supplier’s product.Material: 304L Stainless SteelBakeable to 150°CVacuum rating 1×10-11 mbarWide range of elbows, crosses, tees and adaptors are available