1Water plug is a metal part used for plastic mold or any pipelines of cooling or heating system, in accordance with the required flow to accomplish filling effect. 2It is used for plastic molds, water pipelines cooling system, heating system of thermal conductivity. 3Water plug uses principle of slope, extend O - ring and spring piece to fill. 4Convenient to use, no need of tapping, never rust. 5Tightness is adjustable freely, no need of water-stop belt.
