Grease-injected wireline sealing systems work by pumping specially formulated grease around the moving cable within a control head, forming a pressure-resistant barrier. The grease not only lubricates but also encapsulates the wireline, isolating the wellbore from atmospheric conditions and enhancing operational safety during pressure containment events.​ https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/