Tire inflation system with integrated wheel seal

An axle assembly (10) includes a non-rotating component (20) and a wheel hub (24) supported for rotation relative to the non-rotating component (20) about an axis (A). The wheel hub (24) includes a hub air passage that has a hub inlet and a hub outlet to be fluidly connected to at least one tire (28). An air chamber is formed at least in part between the non-rotating component (20) and the wheel hub (24). The air chamber receives air flow from an air source and directs air flow into the hub inlet. A seal assembly engages the wheel hub (24) to seal the air chamber.