Retaining Rings are suited for thin radial walls.

Press Release Summary:

With minimal radial projection and shallow groove depth, Metric Hoopster® Retaining Rings provide means to retain mechanical components where space is of concern. Profile, circularity, and radial size allow this product to be unobtrusive component in assembly. Suitable for light to heavy loads and thin wall tubes, rings also feature radial profile that will not twist or deform under load. Available sizes range from 10–76 mm in carbon and 302 stainless steel.

Original Press Release:

Smalley Steel Ring Company Introduces New Metric Hoopster® Retaining Rings

Smalley Steel Ring Company, the world leader in the manufacturing and development of Spirolox® Retaining Rings, Constant Section Rings and Smalley Wave Springs announces the launch of the new Metric Hoopster Retaining Rings. The new Metric Hoopster Retaining Rings offer an innovative way to retain mechanical components when space is a problem. The Hoopster’s minimal radial projection and shallow groove depth allows the Hoopster to fit where regular stamped rings and retaining rings cannot.

The Hoopster’s low profile, precision circularity and small radial size allow it to be an unobtrusive component in an assembly. Hoopster Retaining Rings are suitable for light to heavy loads and are ideal for thin wall tubes. An additional advantage of the Hoopster is its potential for high thrust capacity. The low radial profile will not twist or deform under load as with conventional retaining rings.

As an extension to Smalley’s popular Hoopster Retaining Rings, the new metric series offers engineers added design flexibility. Over 150 new rings are available from 10 mm to 76 mm in carbon and 302 stainless steel.

Hoopster Retaining Rings are easy to install and remove without any special tools. Specials can be made with No-Tooling-Charges™. Internal housing rings are available with an optional bent end (removal provision) to simplify the process.

Smalley offers complete information on the Metric Hoopster Retaining Rings including a new catalog supplement featuring part numbers and material options. For more information visit:

About Smalley Steel Ring Company

Smalley Steel Ring Company is the market leader in the leader in the manufacturing and development Spirolox® Retaining Rings, Constant Section Rings, Snap Rings and Smalley Wave Springs. Smalley offers thousands of standard configurations, does not charge for tooling of non-standard sizes, and in most cases can provide special orders in as little as one to two weeks. The company meets international standards of excellence, including ISO 9001, ISO/TS16949, AS9100 and ISO 14001. The company’s world headquarters and manufacturing facility are located in Lake Zurich, Illinois, northwest of Chicago.

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