This polished rod sealer provides stable sealing performance while integrating alignment correction, lubrication, corrosion protection, leakage monitoring, and leakage collection functions. Through radial and axial 360-degree alignment adjustment, the polished rod can remain as close as possible to the center of the packing, reducing or eliminating eccentric wear on the packing.

The built-in lubrication chamber can be filled with anti-corrosion lubricant to lubricate and protect the polished rod, helping prevent corrosion, scaling, and overheating caused by friction. The product also supports leakage monitoring and alarm functions, allowing timely detection of wellhead oil or gas leakage. Any leaked crude oil can be guided into a collection container, reducing environmental pollution and safety risks.