👉 A backing fluid, often used in hydraulic systems, is a liquid that fills the space between two moving parts to ensure smooth operation and prevent metal-to-metal contact. This fluid, typically a mix of water, oil, and sometimes additives, acts as a lubricant and a sealant. It reduces friction between the moving components, dissipates heat generated by the system, and prevents wear and corrosion. By maintaining a consistent film of fluid, it ensures that the hydraulic system operates efficiently and reliably under various conditions.
