Nitrile rubber is favored for its resistance to hydraulic fluids, oil, and alkalis, making it a standard choice for many wireline seal applications. Silicone rubber provides operational flexibility at both low and high temperatures, offering stability under extreme thermal cycling and resisting weathering, oxidation, and ozone attack, important for demanding field conditions.​ https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/