Seal under outer sliding door handle Bus 08/67-07/73

This seal is located under the outer sliding door handle on Type 2 bus 08/67-07/73 and on Type 2 Split bus from 08/66, if they had the option of sliding door(s). The seal should prevent that humidity and dirt could penetrate through the perforation of the control axe of this handle into the lock and also that the handle wouldn't damage the paint of the door.