The VTA | Fittings | KF16 Flexible Bellow Hose (ℓ500 mm) is a stainless steel corrugated flexible bellows hose with KF16 vacuum flanges on both ends, 500 mm in length, used to connect vacuum pump inlets, cold traps, and evaporator vacuum ports on VTA wiped-film distillation systems. The flexible design absorbs vibration and compensates for minor misalignment between vacuum components, protecting flanged connections from stress cracking. Compatible with all standard KF16 fittings on Leybold, Agilent, and other vacuum pumps used with VTA equipment.