Abstract: A hand-held sealing device may be used for sealing a tubeless tire on a corresponding wheel rim. The wheel rim may have a valve stem hole to receive a valve stem. The hand-held sealing device may include a device body. The device body may include an air output nozzle, a directed air outlet defined in the air output nozzle, and an air inlet defined in the device body. The air inlet may be fluidly communicated with the directed air outlet. The hand-held sealing device may also include a valve assembly disposed between the directed air outlet and the air inlet. A cable may be slidably disposed in the air output nozzle. The cable may pass through the directed air outlet. A valve stem engagement member may be configured to removably attach to the valve stem. The valve stem engagement member may be connected to the cable.