Polyurethane made Pneumatic Cushioning Seal provides the end of stroke damping in pneumatic cylinders. The Cushioning Seal is a high performance device and made of quality grade polyurethane. The Cushioning Seal is user friendly and provide automatic centering check valve function and easy, snap-in installation. Polyurethane made Pneumatic Cushioning Seal can be custom made in various sizes and shapes as per specific requirements.