Federal-Mogul's patented CarboGlide® coating delivers a direct improvement in fuel economy and CO2 emissions by reducing ring friction by up to 20% as compared to nitride or other commonly used coatings.

CarboGlide’s superior coating properties are achieved due to a multi-layer microstructure commonly found in high-spec industrial tooling. The special coating contains carbon, deposited in diamond-like form, as well as hydrogen and tungsten. The structure can be produced for a coating thickness of 10 microns, more than three times that of the industry’s latest state-of-the-art coating. A specialised advanced process based on the combination of PVD and plasma-assisted chemical vapour deposition, specifically developed for piston ring application, is used in applying CarboGlide. Federal-Mogul says that the coating’s multi-layer architecture, together with the company’s surface machining and finishing expertise, ensures the integrity of the coating structure, optimal adhesion of the coating and high coating stability on both steel and cast iron rings.