In hydraulic systems, what primarily prevents leaks around moving parts?

In hydraulic systems, seals and gaskets play a crucial role in preventing leaks around moving parts. These components are designed specifically to create a barrier that contains the hydraulic fluid within the system, which is essential for maintaining pressure and ensuring the efficient operation of the system.

Seals are often made from materials that can withstand high pressures and resist wear over time, making them effective at blocking the flow of fluid between moving parts, such as pistons or rods, and fixed components of the system. Gaskets fill the spaces between two surfaces to prevent fluid from leaking out and also help minimize contamination from outside sources.

The effectiveness of seals and gaskets is fundamental to the reliability and longevity of hydraulic systems, as leaks can lead to performance degradation, inefficiency, and environmental concerns. Therefore, the correct answer is that seals and gaskets are primarily responsible for preventing leaks around moving parts in hydraulic systems.