Main Uses of Oil Seals

　　Sealing for engine crankshafts and camshafts in automobiles, motorcycles, and commercial vehicles. Sealing for transmission systems (such as gearboxes, hubs, axles, differentials) in automobiles, motorcycles, and commercial vehicles. Sealing for transmission systems in agricultural and engineering machinery such as forklifts and excavators. Sealing for industrial gearboxes. Sealing for hydraulic components (pumps, motors). Sealing for household appliances such as washing machines. Widely used in mechanical engineering and equipment processing industries.

　　Main Characteristics of Oil Seals

　　Oil seals have a cylindrical outer shape to ensure static sealing of the cavity. They use a rubber outer edge with an inner metal casing; or an outer exposed metal casing, often requiring polishing and a corrosion-resistant coating. A spring-loaded sealing lip ensures reliable dynamic and static sealing of the shaft. Through long-term research and development, the sealing lip structure of oil seals has been improved to achieve excellent performance, thus improving sealing reliability over a wider load range. The addition of a dust lip, or multiple dust lips in special cases, prevents external contaminants and dust from entering. The applicable sealing media are generally mineral lubricating oils, greases, and synthetic lubricating oils and greases. They can also seal DIN51524 hydraulic oils used in industrial production.

　　VDMA24317 and VDMA24320 high-retardant hydraulic oils, and low-lubricity silicone oils. In special cases, they can also seal low-lubricity acids, alkalis, organic solvents, and other corrosive media.

　　Oil seals typically made of fluororubber materials have better corrosion resistance and high-temperature resistance than NBR materials. In the absence of lubrication, pure dryness, and multiple media conditions, it is recommended to use oil seals with PTFE sealing lips. These sealing lips have sufficient lubricity, greatly reducing lip wear. A single oil seal should not seal two different media. A large number of chemicals increase the impact on the performance of the oil seal material. The compatibility of the oil seal with the sealing medium should be determined through laboratory testing.