Grease injection systems complement stuffing box seals in high-pressure wireline. High-viscosity grease pumps into a flow tube or seal chamber, creating a hydrodynamic seal around the cable. This method seals braided wireline by penetrating strand gaps, preventing gas migration. Injection pressure matches wellhead pressure, ensuring no leakage during running in or out. Grease heads fe... https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/