In order to study reciprocating seal of aircraft actuator deeply, the finite element simulation of VL seal ring on linear reciprocating actuator for aviation was carried out. Introduced the simulation process of VL seal ring, and the finite element model of the meshed seal ring was established. By applying fluid pressure penetration load to the VL ring, analyzed the stress and strain of the seal ring under different oil-side pressure, and draw the corresponding lip contact pressure distribution curves in ANSYS APDL respectively, the tendency of maximum equivalent stress and peak lip contact pressure of the seal ring with temperature has also been analyzed. The simulation results show that the test has a certain reference value for understanding the mechanical characteristics of VL seal ring.