Rotary shaft seal in standard design according to N 3760 with an elastomer outer sheath covering a metal insert as well as a spring-energised sealing lip In addition, the standard design is available with a protective lip (WAS) on the air side. The WA is a single-action rotary shaft seal for rotating or pivoting shafts: The elastomer outer sheath provides good static sealing, good thermal expansion balance e g 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.