The SIPEX metal bellows coupling from FLENDER is a particularly low-maintenance and virtually wear-free coupling system that provides for a particularly accurate angular torque transmission and has an extremely low mass moment of inertia. The backlash-free SIPEX coupling requires very little installation space and is very easy to install. The SIPEX coupling consists of two hubs made of aluminum, which are available in different hub designs. The metal bellows of this coupling is made of stainless steel and compensates axial, radial and angular misalignments with only low restoring forces.