Smalley Shims are commonly used in conjunction with wave springs where a back-up plate is needed for housings made of softer metals like aluminum or bronze, and for packings made of leather, neoprene or similar materials. Shims can function as spacers to change wave spring operating heights. Adding or subtracting shims is an excellent method of adjusting load on a wave spring. Using a shim spacer can also control tolerance buildups. Stock Items in carbon steel and 17-7 PH stainless steel. However, Smalley can make them to order in nearly any size or material. Smalley Part Number 1 3 Request FREE samples Get free samples of any standard catalog item at www.smalley.com/samples. Or use form on page 131 of this catalog. Requests typically processed within 24 hours. Get CAD downloads Simplify your design process by downloading CAD models of standard retaining rings and wave springs at www.smalley.com/cad-models.