Pumping rod sheave root

The utility model relates to an eccentric packing for a sucker rod, belonging to the packing of a sealing part used at the sucker rod of a pumping unit. The utility model is characterized in that the eccentric packing for the sucker rod is circular-ring shaped; a packing hole is arranged in the center of the packing; the packing hole is eccentric; the eccentric value of the packing hole and the packing is between 4.5mm and 5.5mm. The utility model has the advantages that eccentric design of the packing hole of the packing meets the operating requirement of factual eccentric displacement of the smooth rod; thus, the smooth rod can be arranged at the sealing center, which avoids the eccentric wear for the packing; the sealing is good. The utility model is suitable for the pumping unit if the packing does not been abraded seriously by the smooth rod.