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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.

KF40 - 750mm Long - Flexible Vacuum Hose SKU: FX40K750 KF Flexible Vacuum Hoses are used to connect parts together when a solid straight connector is impractical or where the two parts move independently and flexibility is required. Manufactured from: 304 Stainless Steel. Helium leak tested to 10-8 mbar. KF Flexible Vacuum Hoses are supplied in a sealed plastic bag with protective plastic caps. KF Flexible Vacuum Hoses are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 60.25 60.25 GBP	KF50 - 1000mm Long - Flexible Vacuum Hose SKU: FX50K1000 KF Flexible Vacuum Hoses are used to connect parts together when a solid straight connector is impractical or where the two parts move independently and flexibility is required. Manufactured from: 304 Stainless Steel. Helium leak tested to 10-8 mbar. KF Flexible Vacuum Hoses are supplied in a sealed plastic bag with protective plastic caps. KF Flexible Vacuum Hoses are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 95.56 95.56 GBP	KF50 - 250mm Long - Flexible Vacuum Hose SKU: FX50K250 KF Flexible Vacuum Hoses are used to connect parts together when a solid straight connector is impractical or where the two parts move independently and flexibility is required. Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Flexible Vacuum Hoses are supplied in a sealed plastic bag with protective plastic caps. KF Flexible Vacuum Hoses are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 70.20 70.2 GBP	KF50 - 500mm Long - Flexible Vacuum Hose SKU: FX50K500 KF Flexible Vacuum Hoses are used to connect parts together when a solid straight connector is impractical or where the two parts move independently and flexibility is required. Manufactured from: 304 Stainless Steel. Helium leak tested to 10-8 mbar. KF Flexible Vacuum Hoses are supplied in a sealed plastic bag with protective plastic caps. KF Flexible Vacuum Hoses are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 99.63 99.63 GBP
KF50 - 750mm Long - Flexible Vacuum Hose SKU: FX50K750 KF Flexible Vacuum Hoses are used to connect parts together when a solid straight connector is impractical or where the two parts move independently and flexibility is required. Manufactured from: 304 Stainless Steel. Helium leak tested to 10-8 mbar. KF Flexible Vacuum Hoses are supplied in a sealed plastic bag with protective plastic caps. KF Flexible Vacuum Hoses are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 162.00 162.0 GBP	KF10/16 Stainless Steel Reducing Centering Ring with Viton O-Ring SKU: KF10/16SVRCR KF10/16 Stainless Steel Reducing Centering Ring with Viton O-Ring KF Stainless Steel Reducing Centering Rings are used to connect two flanges of different internal sizes. This creates a vacuum seal with the use of a clamp. Manufactured from 304 Stainless Steel and Viton. KF Stainless Steel Reducing Centering Rings are supplied in a sealed plastic bag. KF Stainless Steel Reducing Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 4.37 4.37 GBP	KF10 Aluminium Centering Ring with Viton O-Ring SKU: KF10AVCR KF Aluminium Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp. Manufactured from Aluminium and Viton. KF Aluminium Centering Rings are supplied in a sealed plastic bag. KF Aluminium Centering Rings are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 2.99 2.99 GBP	KF10 Blank Flange SKU: KF10BS KF Flanges (Klien) are the standard DIN 28430 and ISO 2861 connections for vacuum fittings up to DN50 used in low and high vacuum. Along with the ancillary components, they offer a simple solution for applications requiring easy and repeated assembly. Sealing is accomplished with a centering with a nitrile or Viton O-ring squashed between a pair of KF Flanges and pulled together using a circumferential clamp. KF Blank Flanges points: • Material: 304L Stainless Steel • Bakeable to 150° C • Vacuum Rating: 1×10-8 mbar • Wide range of elbows, crosses and tees are available • Tubulated Flanges are available for welding to stainless steel tube KF 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: 304 Stainless Steel. KF Blank flanges are supplied in a sealed plastic bag with a protective plastic cap. KF Blank flanges are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 3.25 3.25 GBP
KF10 Stainless Steel Centering Ring with Viton O-Ring SKU: KF10SVCR KF Stainless Steel Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp. Manufactured from 304 Stainless Steel and Viton. KF Stainless Steel Centering Rings are supplied in a sealed plastic bag. KF Stainless Steel Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 2.49 2.49 GBP	KF16 Aluminium Centering Ring with Viton O-Ring SKU: KF16AVCR KF Aluminium Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp. Manufactured from Aluminium and Viton. KF Aluminium Centering Rings are supplied in a sealed plastic bag. KF Aluminium Centering Rings are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 2.99 2.99 GBP	KF16 20mm Bored Flange SKU: KF16B20 KF Flanges (Klien) are the standard DIN 28430 and ISO 2861 connections for vacuum fittings up to DN50 used in low and high vacuum. Along with the ancillary components, they offer a simple solution for applications requiring easy and repeated assembly. Sealing is accomplished with a centering with a nitrile or Viton O-ring squashed between a pair of KF Flanges and pulled together using a circumferential clamp. KF Bored Flanges points: • Material: 304L Stainless Steel • Bakeable to 150°C • Vacuum Rating: 1×10-8 mbar • Wide range of elbows, crosses and tees are available • Tubulated Flanges are available for welding to stainless steel tube KF Bored flanges are used for welding onto tube to produce ports and connectors when manufacturing fabrications. Manufactured from: 304 Stainless Steel. KF Bored flanges are supplied in a sealed plastic bag with a protective plastic cap. KF Bored flanges are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 4.98 4.98 GBP	KF16 Blank Flange SKU: KF16BS KF Flanges (Klien) are the standard DIN 28430 and ISO 2861 connections for vacuum fittings up to DN50 used in low and high vacuum. Along with the ancillary components, they offer a simple solution for applications requiring easy and repeated assembly. Sealing is accomplished with a centering with a nitrile or viton O-ring squashed between a pair of KF Flanges and pulled together using a circumferential clamp. KF Blank Flanges points: • Material: 304L Stainless Steel • Bakeable to 150° C • Vacuum Rating: 1×10-8 mbar • Wide range of elbows, crosses and tees are available • Tubulated flanges are available for welding to stainless steel tube KF 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: 304 Stainless Steel. KF Blank flanges are supplied in a sealed plastic bag with a protective plastic cap. KF Blank flanges are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 2.85 2.85 GBP
KF16 Clamp - Aluminium SKU: KF16C KF Clamps Aluminium are used to clamp two flanges to a centering ring and an O-ring, creating a vacuum seal. KF Clamps Aluminium are manufactured from aluminium and are supplied in a sealed plastic bag. KF Clamps Aluminium are manufactured to the ISO standard and are compatible with other supplier’s products. £ 1.99 1.99 GBP	KF16 to KF10 Tubulated Reducing Adaptor SKU: KF16R10 KF Tubulated Reducing Adaptors are used to change the size of a tube or flange from one size to another. This enables mismatched components to be fitted together. Manufactured from: 304 Stainless Steel. Helium leak tested to 10-8 mbar. KF Tubulated Reducing Adaptors are supplied in a sealed plastic bag with protective plastic caps. KF Tubulated Reducing Adaptors are manufactured to the ISO Standard. They are compatible with other suppliers’ products. £ 14.29 14.290000000000001 GBP	KF16 Stainless Steel Centering Ring with Viton O-Ring SKU: KF16SVCR KF Stainless Steel Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp. Manufactured from: 304 Stainless Steel and Viton. KF Stainless Steel Centering Rings are supplied in a sealed plastic bag. KF Stainless Steel Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 2.10 2.1 GBP	KF16 Stainless Steel Meshed Centering Ring with Viton O-Ring SKU: KF16SVCRM KF Stainless Steel Reducing Centering Rings are used to connect two flanges of different internal sizes. This creates a vacuum seal with the use of a clamp. Manufactured from 304 stainless steel and Viton. KF Stainless Steel Reducing Centering Rings are supplied in a sealed plastic bag. KF Stainless Steel Reducing Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 13.50 13.5 GBP
KF16 SS Trapped Centering Ring with Viton O-Ring SKU: KF16SVCRT KF16 Trapped Centering Ring with Viton O-Ring KF Trapped Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp; they also provide for cases of slight over pressure. Manufactured from: 304 stainless steel, Aluminium and Viton. KF Trapped Centering Rings are supplied in a sealed plastic bag. KF Trapped Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 5.95 5.95 GBP	KF20/25 Stainless Steel Reducing Centering Ring with Viton O-Ring SKU: KF20/25SVRCR KF20/25 Stainless Steel Reducing Centering Ring with Viton O-Ring KF Stainless Steel Reducing Centering Rings are used to connect two flanges of different internal sizes. This creates a vacuum seal with the use of a clamp. Manufactured from 304 Stainless Steel and Viton. KF Stainless Steel Reducing Centering Rings are supplied in a sealed plastic bag. KF Stainless Steel Reducing Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 4.62 4.62 GBP	KF25 Aluminium Centering Ring with Viton O-Ring SKU: KF25AVCR KF Aluminium Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp. Manufactured from Aluminium and Viton. KF Aluminium Centering Rings are supplied in a sealed plastic bag. KF Aluminium Centering Rings are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 2.99 2.99 GBP	KF25 28mm Bored Flange SKU: KF25B28 KF Flanges (Klien) are the standard DIN 28430 and ISO 2861 connections for vacuum fittings up to DN50 used in low and high vacuum. Along with the ancillary components, they offer a simple solution for applications requiring easy and repeated assembly. Sealing is accomplished with a centering with a nitrile or viton o’ring squashed between a pair of KF Flanges and pulled together using a circumferential clamp. KF Bored Flanges points: • Material: 304L stainless steel • Bakeable to 150° C • Vacuum Rating: 1×10-8 mbar • Wide range of elbows, crosses and tees are available • Tubulated Flanges are available for welding to stainless steel tube KF Bored flanges are used for welding onto tube to produce ports and connectors when manufacturing fabrications. Manufactured from: 304 Stainless Steel. KF Bored flanges are supplied in a sealed plastic bag with a protective plastic cap. KF Bored flanges are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 6.20 6.2 GBP