In wind turbine generators, the main bearing plays a crucial role in the entire transmission chain. The function of the main bearing oil seal is to prevent the grease inside the main bearing from leaking outside, causing environmental pollution, and to prevent external dust and other pollutants from entering the bearing, causing damage to the bearing. There are mainly two types of sealing structures commonly used in wind turbine generators: V oil seal and canvas oil seal. The requirements for oil seal dimensions are relatively high. DEDE Sealing Technology uses its excellent technology to meet customer needs.