|Axial shaft seal with an external sealing lip, for use with grease. It is very good at low peripheral speeds, especially with lapped/mating surfaces. It can also be used with liquids. This seal can be used in either a stationery or rotating manner. For use with liquids, the maximum permissible speed must be reduced to 1/3 of the figure indicated in the table. By increasing the spring force, it is possible to raise the medium pressure by up to 50%; however this can result in greater friction and heat-up, and consequently in faster wear.