The installation and assembly of the step seal is also to install the O-ring first, and then install the wear ring of the step seal. When installing the wear ring, first press the wear ring inward in the diameter direction, and then install the wear ring to the groove. inside the groove, and then smooth out the deformation by hand. When installing in winter in the north, first heat the wear-resistant ring and then put it on the shaft. After cooling, install it according to the above method. When placing the shaft, you must pay attention to observe whether the shaft is completely inserted into the wear-resistant ring. At the same time, pay attention to the guide belt not to get stuck. Keep the shaft, otherwise the STE seal may be crushed because the guide belt is squeezed out of the groove.