In a preferred embodiment, the present invention is a plasma sealer attachment for an electrosurgical system. The attachment has a connector assembly, a cable, and a hand piece. The hand piece has a splitter, a pair of tubes and a pair of conductive wires. When used, an inert gas flows through the connector assembly, down the cable and out both tubes. One of the conductive wires is connected to a source of monopolar electrosurgical energy and acts as an active electrode. The other conductive wire is connected to a neutral or ground and acts as a return electrode.