Abstract: A sealing body disposed about a rotating drive axle and forming an air chamber thereabout. The drive axle is provided with an air conduit extending therein and communicating air from the air chamber to the center of the drive axle and for delivery to tires via the wheel at the center of the axle flange. The sealing body includes an air conduit in communication with the air chamber, and is configured to secure to remain stationary about the drive axle axially rotating therein. The sealing body is typically disposed between the drive axle splines and the wheel and forms an air seal thereabout. The sealing body may comprise of a plurality of parts when the splines have a greater diameter than the remainder of the drive axle, but may also comprise of a unitary body configured to be axially disposed over the splines when the splines have a diameter consistent with the drive axle.