Vacuum bellows are flexible metal components designed to preserve a tight hermetic seal in high and ultra-high vacuum environments. Typically made of 304 or 316L stainless steel, these corrugated connectors connect vacuum pipes and equipment with KF, CF or ISO flanges.
The core function of vacuum bellows is to absorb vibration, offset thermal expansion and correct minor assembly misalignment without breaking the vacuum. Premium vacuum bellows deliver ultra-low helium leak rates and minimal outgassing, which is essential for semiconductor, vacuum coating and scientific laboratory applications.
Unlike rigid pipe fittings, vacuum bellows allow controlled axial, lateral and angular movement. Selecting the right vacuum bellows helps avoid leakage and protects expensive vacuum chambers and instruments. Reach out to us to get technical datasheets, CAD files and custom vacuum bellows solutions for your projects.