The AM 45 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. The AM 45 is reinforced by a metal ring which is vulcanized into the elastomer body.
The metal ring ensures the correct functional fit of the wiper in the installation housing. The metal ring is covered by the elastomer which provides for a correct press fit with an increased sealing effect on the outer circumference.