Upon request, the Simmerring Oil Seal with an elastomer outer sheath is provided to the customer with an additional dust lip seal (SL) against moderate to average accumulation of external dirt. In addition, the Simmerring Oil Seal is available as a registered trademark of Freudenberg Sealing Technologies in various designs and materials. The Simmerring Oil Seal with standard designs according to DIN 3760 offers a wide range of applications for all areas of industry.