External retaining rings are designed to go over a shaft and snap into a grove exerting radial tension towards the ring center. In other words, external retaining rings squeeze to hold the component in place on the shaft. When looking for the right external retaining ring the shaft diameter measurement is important. The proper fit will be a great factor on the reliability and proper functionality of the external retainer ring. The maximum thrust load must also be considered. Our rings are typically made out of carbon steel (SAE 1060-1095), but we have made them out of stainless steel and beryllium copper (for rings that have to conduct electricity more efficiently).
For over 50 years we have taken pride in our ability to meet our customers' quality standards. Ring Masters' certification, ISO-14000 as well as QS-9000, reflects the caliber of commitment we have made to achieving only the highest standards. We are also TS-16949 certified.
Our rings are used in a variety of different applications. Industries we serve include Military, Automotive, Fluid power, bearings, medical, sports equipment and more. Our rings are used in the biggest machines in some critical, high stress applications (tractors, bulldozers, tanks, drive trains) all the way down to being applied as a spacer.
We have 3 main classes of external retaining (snap) rings. They are the XAN family, commonly found in the heavy equipment industry and drive trains among other applications, the EN family of external retaining rings, which is notched to aid in assembly and disassembly and the XD family, used for external light duty applications.