standard vacuum flexible hose for vacuum system connection,KF40,500mm

KF(Quick Flange) are ISO standard vacuum fittings and have a flange size of KF10,KF-16,KF-25,KF-40,KF50.They are commenly used to build foreline vacuum plumbing and process systems.They are quick to assemble and require no tools for assembly.A C-clamp and centering Oring form the vacuum seel between the connecting flanges.The mating flanges compress an Oring while the C-clamp is tightened.This seals the connection and allows the vacuum pump to create the vacuum.The seal can be use in vacuum applications up to 10-8Torr.KF Quick Flange Fittings are made of type 304 stainless steel and some fittings come in aluminum. 

Question: Do you test every piece of bellow by the helium mass spectrometer leak detector?

Answer:   Yes, we test every part.