Sealing ring comprises sealing and seating surfaces whose radially averaged area normals form angles with the ring axis which in installed state of the ring are smaller than in noninstalled state

摘要

The sealing ring (122) comprises sealing and seating surfaces whose respective radially averaged area normals (160, 142) form angles with the ring axis (130) which in installed state of the ring are smaller than in noninstalled state. An Independent claim is also included for a device which serves for control of fluid flow rates, and incorporates a rotary cup and at least one of the proposed sealing rings.