Double subdivisions oil seal

　　It means a vertical butt joint of skeleton and seal body to ensure the radial and axial locking and realize the auxiliary positioning and automatic locking of the split end face.

　　Minimal extrusion and cooperation technology – two ends of the skeleton at the split place has a minimal interval under the free state, after the butt joint, the split end face of the seal body forms the minimal extrusion and cooperation automatically to ensure the elastic compensation and sealing performance.