Maximize cylinder liner lifetimes with cermet-coated piston rings
MAN piston rings are precision-engineered to optimize your engine’s combustion performance, fuel efficiency, emissions, and lube oil retention. Not only this but our cermet-coated rings provide the best possible protection against scuffing and seizures on your cylinder liners.
In recent years, regulations have tightened around sulphur emissions with the introduction of SECA zones and the 2020 sulphur cap. All engines today, new or old, must comply with strict emissions limits or risk severe penalties.
However, prolonged operation on low sulphur fuels can have an adverse effect on the tribology of your piston rings and cylinder liners, which can lead to a higher risk of micro-seizures and scuffing. This can result in serious damage that can be costly and time-consuming to repair.
MAN cermet-coated piston rings provide the best possible protection for your cylinder liners, even following prolonged operation on low sulphur fuels. Our three-ring pack also helps to maximize combustion performance and minimize emissions.
Cermet-coated piston rings – the new gold standard
Get long-term performance and protection
Our cermet-coated and Alucoat piston rings are designed to work flawlessly with your MAN engine.
Cermet-coated piston rings
MAN cermet-coated piston rings provide the most effective protection against scuffing and seizures, even following prolonged operation on low sulphur fuels (ULSFO and VLSFO). Cermet is a composite coating material, which is partly ceramic and partly metallic. The two components combine into a material with high elastic durability and high-temperature and seizure resistance. Cermet-coated rings are also designed to work reliably even after an incident with momentary oil film breakdown, provided the oil film is subsequently restored, which ensures that the engine can continue in normal operation until the next planned overhaul.
Key benefits
- Low friction
- Low lube oil consumption
- Increases cylinder liner operational lifetime
- Safe and reliable running-in time
- Maximizes piston operational time
- Improved Time Between Overhaul
Alu-coated piston rings
Alucoat is a thin running-in layer that smoothens the initial running of the piston rings in the cylinder liners. It has a yellow appearance and is applied to all rings, even those with cermet coating.
Alucoat is normally worn off during the first few months, but in some cases already after approximately 1000 running hours. Once it has worn off, the underlying cast iron will be visible.
Contact our teamOptimize combustion performance with our three-ring pack
By maximizing combustion efficiency, our three-ring piston rings pack delivers cleaner engine performance with lower emissions and better lube oil utilization.
Find out how our cermet-coated piston rings deliver the best long-term protection and performance you can get and download our white paper.
Contact our PrimeServ Spare Parts experts
To find out how MAN piston rings can improve your engine’s performance and ROI, contact us below contact form. Our Spare Parts experts will happily provide advice and support
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