Abstract: An air spring for air suspension system comprises a piston assembly and a damper assembly where the piston assembly is spaced apart from the damper assembly to at least partially define an air chamber. A seal is molded with piston walls to form an integrated piston assembly. The seal includes at least one sealing lip extending radially inward from the piston assembly at an angle that is non-perpendicular to an axis of the damper and the at least one sealing lip contacts the damper assembly when the piston assembly and the damper assembly are assembled together to seal the air chamber.

Abstract: An air spring for air suspension system comprises a piston assembly and a damper assembly. A plurality of crush ribs are spaced apart from one another located within an internal cavity defined by the piston assembly and extending in an axial direction. A striker cap is located proximate to a first end of the damper assembly. There is a first interference fit between the damper assembly and the striker cap and there is a second interference fit between the striker cap and the crush fins, such that the piston assembly and the damper assembly are rotationally fixed relative to one another.