A compression spring is a type of mechanical spring that is designed to operate with a compressive load. When a force is applied to compress the spring, it stores potential energy, which is released when the force is removed. These springs are typically made from coiled metal wire and are used in various applications, such as in automobiles, furniture, and industrial machinery. Compression springs are characterized by their helical shape, which allows them to compress along their axis. They are commonly used in devices that require a pushing force, such as valves and cushioning systems. The design and material of a compression spring can vary based on the specific requirements of its application, including load capacity and space constraints.