Ensuring precise alignment of the perforations in multi-hole Rubber grommet plugs is a key step in achieving effective sealing. In practice, it is essential to carefully verify the correspondence between the panel or harness hole positions and the holes in the sealing plug to avoid misalignment caused by visual deviations. For multi-hole rubber plugs, it is recommended to use positioning pins or auxiliary guide lines for initial positioning, ensuring that each opening accurately covers its target location. After the initial placement, gently rotate or shift the sealing plug to feel its fit with the base holes until all openings are perfectly aligned without any blockage. This process requires patience and meticulous attention, especially when installing automotive wire harness sealing plugs, as precise alignment effectively prevents cable damage during subsequent compression. Additionally, good initial alignment lays a reliable foundation for applying anti-fall-off installation techniques later on.