The KF40 Bellow is a corrugated stainless steel pipe that connects to corresponding kf40 flanges. These malleable pipes allow for some error as apposed to hooking up a solid straight pipe. Available in 24 and 36 inch lengths. Don’t forget other KF40 fittings and accessories:

100% stainless steel. 100% USA made.

Bellow warning:
Stretch and bend your bellow into position before installation. Engaging your pump(s) while not doing so could make the bellow jolt/jostle, putting stress on or damage glassware, voiding limited warranties. KF40 Bellow