Abstract: The quality of sealing plays an important role in the sustainability of vehicle NVH. Sealing at inner corner is more prone to failure compared to the straight lines and outer corners. In order to improve the sealing quality at the inner corner， the additional pressure on the bonding substrate generated by compressive sealing strips was studied， and a model for calculating the pressure on the inner corner of the bonding substrate provided by compressive sealing strips was proposed and the finite element simulation of the process was carried out. The results showed that compressive sealing can provide additional pressure on the bonding substrate steadily and evenly.The pressure exerted on the bonding substrate by the sealing strip is proportional to the compression ratio. The distribution of pressure is related to the section shape along the width and it is not immutable. The pressure is distributed uniformly along the circumference， and the difference is less than 8%. It is proved that compressive sealing can obviously improve the sealing quality at the inner corner， and it has good process stability.

Key words: automobile; sealing strip; compressive sealing; process; assembly