RINGFEDER products such as shrink rings and shrink discs.

RINGFEDER's Schpan ring, shrink disk, and Ecolock are mechanical fastening components that utilize wedges for frictional connection.

RINGFEDER's Fundamental Approach RINGFEDER manufactures buffers (coil springs) that are incorporated into the coupling parts of railway vehicles, in addition to fastening elements such as the Schupan ring, supplying them to EU countries and surrounding nations. RINGFEDER applies its know-how in the structure and materials of coil springs to Schupan rings and shrink discs, and as a pioneer in friction fastening elements, it focuses on "the application of high-elastic materials" and "stable supply," as well as "advice on the limit design of elements," "development of application technology," "trouble resolution," and "harmony between elements and counterpart components" in its technical services. The Schupan Ring is RINGFEDER's Original Product! Due to the remarkable nature of its basic design, many counterfeit products have emerged since the patent expired. However, the Schupan ring is an original friction fastening element developed by RINGFEDER in Germany under ISO9001 quality management, consistently manufactured from materials to heat treatment and finishing processes. It is highly regarded as the only product that benefits from high-quality technical support from the RINGFEDER technical department and has sales channels in major advanced countries.

Other machine elements