Hydraulic piston oil seals are designed to facilitate the movement of a piston within a hydraulic cylinder while keeping the hydraulic fluid contained within the chamber. They play a crucial role in maintaining pressure, preventing leaks, and protecting the internal components of the hydraulic system from contaminants. Typically made from materials like rubber, polyurethane, or PTFE (Teflon), these seals can be tailored to suit various temperature ranges, pressures, and chemical exposures, making them incredibly versatile.