An electromagnetic valve for use in controlling fluid flow between first and second passageways (P1, P2) in a hydraulic valve block, comprising: a valve body defining a central axis and having a central opening therethrough, the valve body having a lower end adapted to be inserted into a bore of the valve block and provided with a lower cylindrical opening; an armature axially moveable within the valve body; a spring for biasing the armature in one axial direction; a closing element carried by a lower end of the armature; an electromagnetic coil coaxially surrounding the armature and operable to effect axial movement of the armature in an axial direction opposite the one direction; and a valve seat member carried by the lower end of the valve body and having an orifice providing fluid flow between the first and second valve block passageways (P1, P2), the valve seat member defining a valve seat surrounding the orifice and cooperating with the closing element for selectively closing the orifice, characterized in that: the valve seat member includes a cylindrical tubular portion positioned within the lower cylindrical opening of the valve body, wherein a lower part of the cylindrical portion of the valve seat member projects downwardly below a lowermost end of the valve body and carries a lip seal engageable with the bore of the valve block, wherein the lower cylindrical opening of the valve body is provided with a stop surface at the upper end thereof, and an upper part of the cylindrical tubular portion of the valve seat member includes a flange, the flange being engageable with the stop surface for limiting downward movement of the valve seat member relative to the valve body. a valve body defining a central axis and having a central opening therethrough, the valve body having a lower end adapted to be inserted into a bore of the valve block and provided with a lower cylindrical opening; an armature axially moveable within the valve body; a spring for biasing the armature in one axial direction; a closing element carried by a lower end of the armature; an electromagnetic coil coaxially surrounding the armature and operable to effect axial movement of the armature in an axial direction opposite the one direction; and a valve seat member carried by the lower end of the valve body and having an orifice providing fluid flow between the first and second valve block passageways (P1, P2), the valve seat member defining a valve seat surrounding the orifice and cooperating with the closing element for selectively closing the orifice, characterized in that: the valve seat member includes a cylindrical tubular portion positioned within the lower cylindrical opening of the valve body, wherein a lower part of the cylindrical portion of the valve seat member projects downwardly below a lowermost end of the valve body and carries a lip seal engageable with the bore of the valve block, wherein the lower cylindrical opening of the valve body is provided with a stop surface at the upper end thereof, and an upper part of the cylindrical tubular portion of the valve seat member includes a flange, the flange being engageable with the stop surface for limiting downward movement of the valve seat member relative to the valve body. the valve seat member includes a cylindrical tubular portion positioned within the lower cylindrical opening of the valve body, wherein a lower part of the cylindrical portion of the valve seat member projects downwardly below a lowermost end of the valve body and carries a lip seal engageable with the bore of the valve block, wherein the lower cylindrical opening of the valve body is provided with a stop surface at the upper end thereof, and an upper part of the cylindrical tubular portion of the valve seat member includes a flange, the flange being engageable with the stop surface for limiting downward movement of the valve seat member relative to the valve body.