The AE 47 is a single-acting wiper. Because it is pressed against the rod, dirt is wiped from the surface by the action of the rod as it retracts.
Wipers made of TPU are well suited to applications in mobile hydraulics where they are subjected to a heavy dirt load. Due to the good wear resistance of polyurethane, the AE 47 has a long service life. Due to the additional diameter step on the outer fit, the AE 47 provides better sealing and exerts a stronger wiping force on the rod. AE 47 standard dimensions have pads on the inner diameter which support the correct functional fit of the wiper.