Stainless Steel Vacuum Flex Hose 10in DN40KF Flange Both Ends OD 55mm ID 41mm

Stainless Steel Vacuum Flex Hose 10in DN40KF Flange Both Ends OD 55mm ID 41mm

A 10-inch stainless steel corrugated bellows flex hose with DN40KF (NW40/KF40) flanges on both ends. Built for vacuum pump and vacuum system plumbing, this hose provides a flexible connection between two KF40-flanged components, allowing for slight misalignment, vibration isolation, and easier routing in confined spaces.

Specifications & What's Included

• Type: Stainless steel corrugated vacuum flex hose (bellows)
• Flange standard: DN40KF (also known as NW40 / KF40) — one flange on each end
• Overall length: 10 in (approx. 254 mm)
• Outer diameter (OD): 55 mm
• Inner diameter (ID): 41.2 mm
• Material: Stainless steel
• Construction: Corrugated bellows — flexible along its length
• Hose only — no KF clamps, centering rings, or O-rings included

Applications

DN40KF (NW40/KF40) vacuum flex hoses are standard plumbing components in medium-vacuum and high-vacuum systems. They connect vacuum pumps, chambers, valves, gauges, and other components fitted with KF quick-flange fittings, which are among the most widely used vacuum flange standards in research and industrial settings. The corrugated bellows construction allows the hose to absorb vibration from a running pump, compensate for minor misalignment between ports, and simplify routing around obstacles — making these hoses a practical alternative to rigid tubing wherever some movement or flexibility is needed. They are commonly found in systems using turbomolecular pumps, rotary vane pumps, diffusion pumps, and ion pumps across applications including thin-film deposition (PVD/CVD), electron microscopy, mass spectrometry, and general laboratory vacuum systems.