Vacuum Bellows & Flexible Hoses

KF/ISO and CF flexible vacuum hoses

KF/ISO and CF flexible vacuum hoses (bellows) are designed to provide reliable, leak-tight connections in systems where rigid pipework is impractical. They are ideal for applications requiring flexibility, vibration isolation, thermal expansion compensation, or where components must move independently whilst maintaining ultra-high vacuum integrity.


Manufactured in accordance with ISO and CF standards, our flexible bellows are fully compatible with industry-standard components from other suppliers, ensuring easy integration into new or existing vacuum systems.

Product Overview

UltraHighVacuum offers a comprehensive range of flexible vacuum bellows suited for a wide range of high vacuum (HV) and ultra-high vacuum (UHV) applications. Our standard range is available for next working day delivery, while our bespoke manufacturing service allows for custom lengths, diameters, and flange configurations tailored to your exact requirements.


Whether you are designing a new system or upgrading an existing one, our flexible hoses provide a dependable solution for maintaining vacuum performance without sacrificing mechanical flexibility.

Packaging & Handling

To maintain cleanliness and prevent contamination, all flexible vacuum hoses are supplied in sealed protective plastic packaging with protective end caps to safeguard flange sealing surfaces.


Bespoke Manufacturing Service

If your application requires a non-standard configuration, UltraHighVacuum can manufacture bespoke bellows to your specification. Options include:

  • Custom lengths and diameters
  • Mixed flange types (KF, ISO, CF combinations)
  • Reinforced or externally braided designs for higher pressure resistance
  • Special material grades on request


Our technical team is available to help specify the ideal solution for your system.

Get In Touch Today

Get in touch today to discuss your requirements, please contact us on

+44 (0) 1424 447726   [email protected]