Valve seal for a pressure medium controlling valve

摘要

A pressure medium controlling valve has a valve member with an annular groove being formed in the surface of the valve member directed toward a valve seat. A resilient sealing ring is disposed within the annular groove and is opposed from the valve seat. The side of the annular groove facing toward the pressure medium is cylindrical and is engaged by the end of a resilient sealing lip attached to the outer peripheral surface of the sealing ring. The sealing lip extends angularly outwardly away from the sealing ring and toward the surface of the valve member directed toward the valve seat so that the outer end of sealing lip abuts resiliently against the cylindrical surface of the groove to form a seal therewith. The other side of the annular groove is provided with an undercut which receives a correspondingly shaped portion of the sealing ring.