Using a unique wet formula design, combined with nano composite dispersion technology, a wet nano rubber with excellent performance is obtained, which has excellent wear resistance, strength and elasticity, and its service life is greatly increased. Experiments have shown that when the impact velocity is small, the liner is only elastically deformed; when the impact velocity is greater than 9 m/s, the liner is damaged. Of course, the cushioning effect of the rubber liner is also related to the impact angle. When the impact angle is 90°, the cushioning effect is the largest and the liner wear is the smallest. As the impact angle decreases, the liner wear gradually increases.