Shaft seal with rotationally symmetrical sealing ring

摘要

The concertina-shaped sealing ring (1) is made of hard elastic material consists of at least four axially adjacent ring membranes joined alternately along their inner and outer periphery. The ring membranes are corrugated radially flat, conically or concentrically in relation to the rotational axis (122) of symmetry. The part of the sealing ring near its sealing edges (11,12) is made of a different material from the rest of the sealing ring.