Bearing Seals, also known as grease seals, are used to protect tapered, spherical, cylindrical and double-row bearings from excess grease loss and contamination. In 1956, Clark Seals partnered with The Timken Company to develop the industry's first precision bearings seals for tapered roller bearings. The seals are important in stopping grease lubrication used in the bearings from leaking out.

Rolling resistance is a significant factor in the power losses of vehicles. Seals used in bearings can be a significant contributor due to the friction generated.

SKF has addressed this issue with new designs and bearing seals materials which provide reduced friction and longer service life, keeping lubricants in and contaminants out.