Flexible flange coupling with progressive characteristic. For use in heavy duty applications. Extremely robust and fail-safe jaw-type construction with elastomeric buffers subjected only to compressive stress. Features medium torsional stiffness with progressive characteristic. Developed for a resonance-free operation of diesel-driven powertrains, particularly generators. Dampens torsional vibrations and shocks and compensates axial, radial and angular misalignments. Reliable and rupture-proof, in an especially short and economical design. Blind assembly for minimum mounting effort. With flywheel connections acc. to SAE. Also available for non-standard flywheels.