Sealing systems often include wiper elements designed to remove contaminants such as mud, sand, or other solids from the wireline surface as it enters the sealing head. This not only protects the primary seal from abrasion but also ensures that foreign matter is not introduced into the wellbore, maintaining healthy downhole conditions and tool longevity.​ https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/