Compression Springs.
Compression Springs are open-coil helical springs that offers resistance to a compressive force applied axially. Helical compression springs are used to resist applied compression forces or to store energy in a push mode. Compression springs have the most common configuration and are most commonly used in automotive, aerospace and consumer applications.
Most compression springs are a straight cylendrical spring made of round wire. North Harris Spring , a manufacturer of compression springs produces a variety of compression types, shapes, and specific specifications. A type of spring designed to compress and become smaller when presented with compressive load. Ends of springs can be made open, squared or ground as specified