Smalley Retaining Rings

Founded in 1918, Smalley is a family-owned U.S. manufacturer and the inventor of the edgewound wave spring and spiral retaining ring. Headquartered in Lake Zurich, Illinois, the company has grown from a small manufacturing facility into a 300,000-square-foot operation, serving customers worldwide through a global network of offices, engineers, and distribution partners. For more than a century, Smalley has been dedicated to helping engineers solve complex design challenges with innovative retaining ring and wave spring solutions.

Smalley manufactures an extensive portfolio of retaining rings, wave springs, and constant section rings, offering more than 11,000 standard parts across 12 product types and over 400 sizes. In addition to its stocked products, the company specializes in custom-engineered solutions using its proprietary edgewinding manufacturing process, allowing parts to be produced without new tooling charges. With more than 40 material options and support from an experienced engineering team, Smalley delivers cost-effective, application-specific components for industries including medical, aerospace, automotive, industrial, oil and gas, wind energy, consumer products, and e-mobility.

Committed to quality, innovation, and customer service, Smalley combines vertically integrated U.S. manufacturing with comprehensive engineering support, rapid prototyping, and global distribution. Its focus on precision manufacturing, responsive technical assistance, and dependable delivery has earned the trust of OEMs worldwide, making Smalley a leading partner for retaining ring and wave spring solutions across thousands of critical applications.