As a key component of the gearbox, the oil seal in the motor reducer plays a critical role in the sealing and lubrication of the gearbox. The oil seal is mainly used to prevent oil leakage and dust intrusion in the gearbox, which ensures the stable and reliable operation of the reducer for a long time. The oil seal used in the motor reducer is made of high-quality materials, such as silicone rubber, fluorine rubber, NBR, and viton. These materials are characterized by excellent wear resistance, high temperature resistance, and good sealing performance. Moreover, they can adapt to different lubricating oils and working conditions, which ensures the high sealing efficiency and long service life of the oil seal. The design and structure of the oil seal should also be considered when selecting the oil seal. The oil seal should be designed to match the shaft diameter and housing bore, so as to ensure the proper bearing of the oil seal. The spring inside the oil seal can effectively improve the sealing performance and reduce the friction between the oil seal and the shaft. In addition, the installation process of the oil seal is also very important. Special tools should be used to install the oil seal in order to ensure that the oil seal is installed in the correct position and direction. Attention should also be paid to the cleanliness of the installation environment and the fitting surface of the oil seal, so as to prevent the oil seal from being damaged during the installation process. In conclusion, the oil seal is an essential component of the motor reducer, and its quality directly affects the performance and reliability of the gearbox. With the use of high-quality materials, proper design and structure, and strict installation process, the oil seal can effectively prevent oil leakage and dust intrusion, and ensure the stable and reliable operation of the motor reducer for a long time.