​Federal-Mogul Daros® is one of the world’s leading suppliers of piston rings to the global marine industry.  As both designer and manufacturer, we have expertise in key areas such as materials, geometry, tribology and coatings, enabling us to develop optimized and reliable ring packs for the most advanced large bore engines. 

We believe close cooperation with our customers is vital, whether they are designers, engine builders or ship-owners; you help us improve the performance of our piston rings.