Constant Section Retaining Rings / Snap Rings

Constant section retaining rings, also known as snap rings, are manufactured with a uniform width along their circumference, providing three points of contact with the groove. Constant section rings/snap rings excel in applications with tight clearances or limited space, thanks to their lug-free design. Customers frequently choose constant section rings due to their robust cross-section, which enhances their ability to withstand impact loads effectively.

Designed to provide constant contact that is uniform across a range of deflections, the portion of the ring protruding from the groove (also known as the shoulder) securely holds an assembly in place.
Constant section rings also provide opportunities for many different end configurations based on application needs.

Sizes available from:

  • Standard: .157 to 10” (4 mm to 150 mm)
  • Custom: .157” to 15” (4 mm to 380 mm)

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3D render of constant section retaining rings, also known as snap rings, with a uniform profile for sturdy and reliable fastening on a shaft


Constant section rings/snap rings are installed in a horizontal direction into a groove in a housing or on a shaft. They don’t require special tooling for installation and removal, although some constant section rings feature notches on the end of the ring to make installation easier.

constant section ring in housing
CV Joint Retaining Ring

Application Examples

Constant section rings/snap rings are commonly used in industrial applications across all industries, where they provide a secure and efficient way to hold components in place.

Some common examples include:

  • Actuators
  • Engines, transmissions and axels
  • Orthopedic implants
  • Electronics
  • Conveyors
  • Pumps
constant section rings in a variety of materials

Materials & Finishes for Constant Section Rings/Snap Rings

Rotor Clip provides a variety of materials and finishes to suit any application.

More about material & finish options

Retaining rings customized for your project

Standard or custom, coiled or stamped, our rings are engineered for you. Send us your application requirements.

Director of Technical Sales at Rotor Clip
Jeff Finkernagel
Director of Technical Sales EngineeringRotor Clip

Talk to the Engineering Team

Rotor Clip Constant Section Retaining Rings (Snap Rings)

Internal Inch

Internal Metric

External Inch

External Metric