In order to solve the storage life of the fluoroelastomer seal in the hydraulic system, the accelerated aging test was carried out on two kinds of medium environment. The results show that the fluoroelastomer has good dielectric resistance and aging resistance. Accelerated aging 120 days under 90℃, compression rebond and mechanical properties to keep rates are above 80%.The storage life of fluoroelastomer is estimated to 20 years in the hydraulic system.