The utility model relates to a top packing polished rod sealer, and belongs to the mechanic oil production well control head field. The utility model aims to solve the difficult packing-changing problem for the oil production workers. The utility model is mainly composed of a blowout prevention box seal, a top rotary device and a hollow hose gate, etc. The utility model is mainly applied to the mechanic oil production well head, and has the advantages of being with the function of the top rotary device, as well as reasonable in structure and reliable in seal, etc.