A damper system includes a cylinder wall defining a cylindrical chamber and having an open end having an annular recess. A piston is reciprocatingly disposed in the cylinder and is connected to a piston rod that extends out of the open end of the cylinder. An annular wiper seal is mounted in the annular recess of the cylinder and engages the piston rod. The annular wiper seal is made from a thermoplastic material. The annular wiper seal has an S-shaped cross section with a wiper lip having a lip edge that engages the piston rod, wherein the wiper lip has a substantially constant thickness along a majority of its length from the lip edge to the second radially inwardly extending portion.