KF Fittings


The KF ranges of flanges and fittings are manufactured from high quality stainless steel. KF flanges utilize an aluminium clamp with a single wingnut fastener allowing frequent disassembly without tools.

The vacuum seal is effected by uniform applications of pressure by the clamp on the 15° surface of the flange. The mating flange surfaces compress an ‘O’-ring (held in place by a metal ring) to produce a seal that can used in vacuum applications down to 10-8 mbar and baked to 200°C (sustained to 150°C)

Advanced sealing material such as aluminium or copper may be used, when the joints have to be operated or baked at elevated temperatures or if high corrosion resistance and/or electrical insulation are required.

Our vacuum components are bead-blasted inside and outside, unless otherwise stated. The sealing faces are polished mechanically.

All components are subjected to a leak testing protocol.

KF50 Vacuum Viewport
SKU: VPZ50K
KF Vacuum Viewports are used to view the interior of the vacuum chamber and view the process and/or manipulation. Manufactured from: 304L stainless steel. Helium leak tested to 10-10 mbar. KF Vacuum Viewports are supplied in a sealed plastic bag with protective plastic caps. The KF Vacuum Viewports are manufactured to the KF Standard and are compatible with other supplier’s product. • Bakeable up to 150°C at not greater than 2-3 °C per minute • Wide range of KF Elbows, KF Crosses, KF Tees, KF Flanges and KF Adapters are available • Tubulated Vacuum Flanges are available for welding to a stainless steel tube • Vacuum Rating 1×10-8 mbar ...more