What is Canted Coil Spring, Helical Spring and Cantilever Spring?

Canted Coil Spring, Helical Spring, and Cantilever Spring are different types of springs used in various applications.

Canted Coil Spring-spring energized seals


Here’s a brief explanation of each:

  1. Canted Coil Spring:
    • Description: Canted coil springs, also known as slant coil springs, are unique helical or spiral springs with a slanted or canted coil orientation.
    • Design: The coils are not aligned parallel to the spring axis but are canted at an angle. This design provides certain advantages, such as improved performance in specific applications, including sealing and electromagnetic shielding.
    • Applications: Canted coil springs are often used in sealing applications, electromagnetic interference (EMI) shielding, and as energizers in seals and gaskets.
  2. Helical Spring:
    • Description: Helical springs are traditional coiled springs with a uniform diameter along the entire length of the coil.
    • Design: They are made by winding a wire in a helix or spiral shape. Helical springs can be designed in various forms, such as compression springs, extension springs, and torsion springs.
    • Applications: Helical springs are widely used in countless applications, including automotive suspensions, industrial machinery, consumer products, and more.
  3. Cantilever Spring:
    • Description: A cantilever spring is a type of spring with one end fixed and the other end free to move. It resembles a diving board in structure.
    • Design: The spring material is loaded in bending. When a force is applied to the free end, the spring bends or deflects.
    • Applications: Cantilever springs are used in various applications where a simple spring mechanism is needed, such as in certain types of switches, sensors, and control systems.
Cantilever spring-spring energized seals


Each type of springs has unique characteristics that make it suitable for specific applications. The choice of a particular type depends on factors like the required force, space constraints, and the nature of the load.