Seal and method for manufacturing thereof

A seal for sealing a first component with respect to a second component that is rotatable about an axis relative to the first component, the seal comprising:

• a sealing lip having a sealing region configured to abut on the first component,
• wherein the sealing lip includes a pumping structure at least in the sealing region, the pumping structure being configured to effect a movement of a liquid medium in a direction from a first axial side of the seal towards or to a second axial side of the seal when the first component rotates relative to the second component around at least one direction of rotation about the axis;
• the pumping structure comprises at least one pumping groove that extends along a direction of extension;
• and
• the pumping structure further includes at least one retaining structure disposed in the at least one pumping groove, the at least one retaining structure reducing a cross-section of the at least one pumping groove, in at least one direction perpendicular to the direction of extension, to a value of between 50% and 90% of an extension of the cross-section of the pumping groove outside the at least one retaining structure along said at least one direction.