The basic principle of sealing is straightforward – the flexible lip is held against the rotating part (usually the shaft) whilst the casing (or O.D.) is pressed into the housing or bore and holds the seal in place. The sealing lip needs some form of lubrication to avoid overheating and is usually energized by means of a garter spring.
Regular maintenance and timely inspection of the steering rack oil seal are thus imperative. Signs of a worn-out seal include steering wheel vibrations, a whining noise while turning, or visible fluid leaks beneath the car. If any of these symptoms are noticed, it's advisable to have a professional mechanic inspect the steering system immediately. Motor oil seals are typically made from rubber or a similar material that is able to withstand the high temperatures and pressures present in an engine. They are placed in specific locations around the engine to prevent oil from seeping out through gaps or openings. Without these seals, oil could leak out onto the engine parts, causing damage and potentially leading to a loss of lubrication for the engine.