A seal component for a prosthetic liner comprises a base portion located at a distal portion of the seal component and anchored circumferentially to an exterior surface of the liner； a seal wall arranged to flexibly and movably extend relative to a body of the liner； at least two seal rings radially and outwardly extending from the seal wall； and an outwardly pitched portion at the distal end of the seal component and extends obliquely away from the base portion relative to the axis of the seal component, and an inwardly pitched portion at the proximal end of the seal component and extends obliquely toward the axis of the seal component, the at least two seal rings are located between the outwardly and inwardly pitched portions.
