SS 304 High Vacuum Bellows Flex Hose 5.15" ISO-K Flange 9" Length Roughing Line

SS 304 High Vacuum Bellows Flex Hose 5.15" ISO-K Flange 9" Length Roughing Line

This is a stainless steel 304 corrugated bellows flex hose terminated with ISO-K style flanges on both ends. Designed for use in high vacuum plumbing systems, this type of flexible bellows section absorbs vibration, accommodates minor misalignment, and provides mechanical isolation between vacuum pump stages and chambers. The all-welded SS304 construction is compatible with high vacuum environments where cleanliness and low outgassing are required.

Specifications & What's Included

• Material: Stainless Steel 304


• Flange Type: ISO-K (both ends)


• Flange Bore / Nominal Size: 5.15" (approx. ISO-K 130)


• Bellows Body Length: 9"


• Construction: Corrugated welded stainless bellows


• Vacuum Compatibility: High vacuum


• Connection: ISO-K clamp-style flanges (clamps and centering rings not included)


• Quantity: 1 bellows flex section

Applications

High vacuum bellows flex hoses of this type are standard components in roughing pump lines, turbomolecular pump inlet connections, and vacuum deposition system plumbing — including PVD sputtering, CVD, and thermal evaporation systems. The ISO-K flange standard (also known as ISO large flange or LF) is widely used in research and industrial vacuum systems in the 10⁻³ to 10⁻⁷ Torr range, and is common on equipment from manufacturers such as Pfeiffer, Leybold, BOC Edwards, Varian, and Alcatel. Flexible bellows sections like this are used to reduce mechanical stress on pumps and chambers, dampen vibration transmitted by roughing and turbo pumps, and allow for small positional offsets during system assembly or maintenance. They are routinely used in semiconductor fabrication, thin-film coating, electron microscopy, surface science research, and general industrial vacuum applications.