Rotary shaft seal in standard design according to DIN 3760 with an elastomer outer sheath covering a metal insert as well as a spring-energised sealing lip and a protective lip on the air side. The WAS is a single-action rotary shaft seal for rotating or pivoting shafts with protective lip sealing action on the side facing away from the medium, against dirt accumulation from the outside The elastomer outer sheath provides good static sealing, good thermal expansion balance eg, in light-metal housings, better sealing with greater roughness and secure sealing for split housings as well as good static sealing with thin fluid or gaseous media.