Los seals They are pieces used to maintain and lubricated the main mechanical organs. Its function is to protect these organs from dust and water.. These organs are the engine, the differentials, bearings, etc.
These pieces serve as lace, but they must be lubricated with oil or grease so that when the piece slides on the surface there is as little friction as possible and in this way protects the so-called lips of the seal. This lubrication process must be done when the part is put into service or after repairing it..