Hybrid Adapter CF to KF

The Hybrid Adapter CF to KF provides a reliable transition between ConFlat (CF) and ISO-KF vacuum flange systems, allowing components with different flange standards and nominal diameters to be connected within a single vacuum assembly.

Manufactured from high-quality stainless steel, the adapter combines a CF flange on one side with a KF (QF / NW) flange on the other. This configuration is particularly useful for connecting ultra-high vacuum chambers and CF-based equipment to KF vacuum components, pumping lines, or auxiliary vacuum systems.

Available in stainless steel 1.4301 (AISI 304), 1.4404 (AISI 316L), and 1.4429 ESU (AISI 316LN ESR), offering material options for different vacuum system requirements.

Technical Specifications

CF Flange Sizes: DN16, DN25, DN40, DN50, DN63, DN100 CF

KF Flange Sizes: DN16, DN25, DN40, DN50 KF

Materials: Stainless Steel 1.4301 (AISI 304), Stainless Steel 1.4404 (AISI 316L), Stainless Steel 1.4429 ESU (AISI 316LN ESR)

Flange Connections: CF (ConFlat) to ISO-KF (QF / NW)

Design: Hybrid vacuum flange adapter

Sealing: Metal gasket on the CF side; compatible KF sealing element on the KF side

Applications

Ideal for connecting CF vacuum chambers, vacuum pumps, pumping systems, vacuum manifolds, and laboratory equipment with different flange standards.

The adapter is particularly suitable for vacuum system modifications, component integration, and transitions between CF-based ultra-high vacuum equipment and KF vacuum connections.

Installation and Compatibility

The CF flange connects to a compatible ConFlat flange using a suitable metal gasket and appropriate fastening hardware.

The KF flange connects using a standard KF clamp and centring ring with O-ring seal.

Both connections require sealing components matching the corresponding nominal flange size.

Please note that the achievable vacuum pressure and operating temperature depend on the selected KF sealing system. Conventional elastomer-sealed KF connections are generally not suitable for demanding ultra-high vacuum applications.

Compatible CF Flanges & Components and KF Flanges & Components are available separately.