The seal’s lip design maintains contact with the moving wireline under differential pressure. Grease injection ports lubricate the seal-wire interface, reducing friction and wear. These seals fit into blowout preventers or stuffing boxes, ensuring well control during logging, perforating, or fishing jobs in oil and gas wells. https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/