Product Range

ISO Fittings


The ISO ranges of flanges and fittings are manufactured from high quality stainless steel.

There are various types of ISO flanges:

  1. ISO-K (clamp) flanges with a grooved ring for inserting wall clamps and double claw clamps are smaller and less expensive.
  2. ISO-F (fixed) flanges with a set of through-bore holes are pressed together with standard bolts. They are more stable than ISO-K flanges which enable them to mechanically support parts of the vacuum chamber.
  3. ISO bolt rings are used to make an ISO-K flange and ISO-F flange.
  • Material: 304L Stainless steel
  • Bakeable to 200’C (150’C continuous)
  • Vacuum rating 1×10-8mbar
  • Wide ranges of Elbows, Crosses & Tees are available
  • Bored Flanges Are Available For Welding To Stainless Steel Tube
ISO80 Claw Clamp Tubulation Fixed
SKU: ISO80TU
ISO Claw Clamp Tubulations are used to weld into other fabricated parts to produce ports for instruments and feedthrough attachments.Manufactured from: 304 Stainless Steel. ISO Claw Clamp Tubulations are supplied in a plastic bag with a protective plastic cap.ISO Claw Clamp Tubulations are manufactured to the ISO Standard and are compatible with other supplier’s product.
£ 79.90 79.9 GBP
Demountable viewport on a ISO80 flange with UV grade fused silica optic
SKU: ISO80VPDF

Demountable viewport on a ISO80 flange with UV grade fused silica optic

Demountable viewport for high vacuum systems allowing users to change optics without having to replace the complete viewport, which saves money, and is very useful if optic damage is likely, for example, in laser applications

Constructed from stainless steel 304L (1.4307) with an aluminium alloy retainer
Can be installed on standard ISO vacuum ports, no special adaptors or fittings needed
UHV cleaned and helium leak tested
Typical lead time 4-6 weeks
Optic materials available: borosilicate glass, sapphire, zinc selenide (ZnSe), magnesium fluoride (MgF2), barium fluoride (BaF2) and calcium fluoride (CaF2). Other materials may be supplied on request.

Different sizes available on request.
£ 675.00 675.0 GBP
Demountable viewport on a ISO80 flange with borosilicate glass (Kodial) optic
SKU: ISO80VPDK

Demountable viewport on a ISO80 flange with borosilicate glass (Kodial) optic

Demountable viewport for high vacuum systems allowing users to change optics without having to replace the complete viewport, which saves money, and is very useful if optic damage is likely, for example, in laser applications

Constructed from stainless steel 304L (1.4307) with an aluminium alloy retainer
Can be installed on standard ISO vacuum ports, no special adaptors or fittings needed
UHV cleaned and helium leak tested
Typical lead time 4-6 weeks
Optic materials available: borosilicate glass, sapphire, zinc selenide (ZnSe), magnesium fluoride (MgF2), barium fluoride (BaF2) and calcium fluoride (CaF2). Other materials may be supplied on request.

Different sizes available on request.
£ 575.00 575.0 GBP
ISO80 4 Way Cross
SKU: ISO80X
ISO 4 Way Crosses are used to bring in two branch lines of the same size into a main line.Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. ISO 4 Way Cross are supplied in a sealed plastic bag with protective plastic caps.ISO 4 Way Cross are manufactured to the ISO Standard and are compatible with other supplier’s product.
ISO80 to ISO63 Reducing 4 Way Cross
SKU: ISO80X63
ISO Reducing 4 way Crosses are used to bring two Branch lines of a different size into a main line.Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. ISO Reducing 4 way crosses are supplied in a sealed plastic bag with protective plastic caps.ISO Reducing 4 way crosses are manufactured to the ISO Standard and are compatible with other supplier’s product.
ISO80 6 Way Cross
SKU: ISO80XX
ISO 6 Way Crosses are used to bring in four branch lines of the same size into a main line.Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. ISO 6 Way Crosses are supplied in a sealed plastic bag with protective plastic caps.ISO 6 Way Crosses are manufactured to the ISO Standard and are compatible with other supplier’s product.
ISO100 TO KF40 Tubulated Adaptor
SKU: SK1040
ISO to KF Tubulated Adaptors are used to change from one size of tube or flange to another size enabling the fitting together of mismatched components.

Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8mbar. ISO to KF Tubulated Reducing Adaptors are supplied in a plastic bag with protective plastic caps.

ISO to KF Tubulated Adaptors are manufactured to the ISO Standard and are compatible with other supplier’s product.
£ 105.00 105.0 GBP
ISO100 TO KF50 Tubulated Adaptor
SKU: SK1050
ISO to KF Tubulated Adaptors are used to change from one size of tube or flange to another size enabling the fitting together of mismatched components.

Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8mbar. ISO to KF Tubulated Reducing Adaptors are supplied in a plastic bag with protective plastic caps.

ISO to KF Tubulated Adaptors are manufactured to the ISO Standard and are compatible with other supplier’s product.
£ 115.00 115.0 GBP
ISO63 TO KF25 Tubulated Adaptor
SKU: SK6325
ISO to KF Tubulated Adaptors are used to change from one size of tube or flange to another size enabling the fitting together of mismatched components.Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8mbar. ISO to KF Tubulated Reducing Adaptors are supplied in a plastic bag with protective plastic caps.ISO to KF Tubulated Adaptors are manufactured to the ISO Standard and are compatible with other supplier’s product.
£ 89.90 89.9 GBP
ISO63 TO KF40 Tubulated Adaptor
SKU: SK6340
ISO to KF Tubulated Adaptors are used to change from one size of tube or flange to another size enabling the fitting together of mismatched components.

Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8mbar. ISO to KF Tubulated Reducing Adaptors are supplied in a plastic bag with protective plastic caps.

ISO to KF Tubulated Adaptors are manufactured to the ISO Standard and are compatible with other supplier’s product.
£ 89.90 89.9 GBP
ISO63 TO KF50 Tubulated Adaptor
SKU: SK6350
ISO to KF Tubulated Adaptors are used to change from one size of tube or flange to another size enabling the fitting together of mismatched components.

Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8mbar. ISO to KF Tubulated Reducing Adaptors are supplied in a plastic bag with protective plastic caps.

ISO to KF Tubulated Adaptors are manufactured to the ISO Standard and are compatible with other supplier’s product.
£ 95.00 95.0 GBP
ISO100 Vacuum Viewport
SKU: VPZ-ISO100
ISO 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. ISO Vacuum Viewports are supplied in a sealed plastic bag with protective plastic caps.

The ISO Vacuum Viewports are manufactured to the ISO 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 ISO Elbows, ISO Crosses, ISO Tees, ISO Flanges & ISO Adapters are available
Tubulated Vacuum Flanges are available for welding to a stainless steel tube
Vacuum rating 1×10-9 mbar
ISO160F Viewport
SKU: VPZ-ISO160

ISO160 Vacuum Viewport

ISO 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. ISO Vacuum Viewports are supplied in a sealed plastic bag with protective plastic caps.

The ISO Vacuum Viewports are manufactured to the ISO 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 ISO Elbows, ISO Crosses, ISO Tees, ISO Flanges & ISO Adapters are available
Tubulated Vacuum Flanges are available for welding to a stainless steel tube
Vacuum rating 1×10-9 mbar
ISO200 Vacuum Viewport
SKU: VPZ-ISO200
ISO 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. ISO Vacuum Viewports are supplied in a sealed plastic bag with protective plastic caps.

The ISO Vacuum Viewports are manufactured to the ISO 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 ISO Elbows, ISO Crosses, ISO Tees, ISO Flanges & ISO Adapters are available
Tubulated Vacuum Flanges are available for welding to a stainless steel tube
Vacuum rating 1×10-9 mbar
ISO250 Vacuum Viewport
SKU: VPZ-ISO250
ISO 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. ISO Vacuum Viewports are supplied in a sealed plastic bag with protective plastic caps.

The ISO Vacuum Viewports are manufactured to the ISO 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 ISO Elbows, ISO Crosses, ISO Tees, ISO Flanges & ISO Adapters are available
Tubulated Vacuum Flanges are available for welding to a stainless steel tube
Vacuum rating 1×10-9 mbar
ISO63 Vacuum Viewport
SKU: VPZ-ISO63
ISO 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. ISO Vacuum Viewports are supplied in a sealed plastic bag with protective plastic caps.

The ISO Vacuum Viewports are manufactured to the ISO 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 ISO Elbows, ISO Crosses, ISO Tees, ISO Flanges & ISO Adapters are available
Tubulated Vacuum Flanges are available for welding to a stainless steel tube
Vacuum rating 1×10-9 mbar