## Namura NA-20075R Piston Rings - Reliability and Performance for Your Engine While often overlooked, piston rings play a crucial role in engine performance and durability. Namura NA-20075R piston rings, designed for pistons with diameters of 84.95mm, 84.96mm, and 84.97mm, guarantee top quality and precision manufacturing. The Namura brand is known for its attention to detail and the use of advanced technologies, resulting in excellent performance and long product life. ### Advanced Materials and Technologies Namura designs its piston rings for specific applications. The materials used in production, such as highly ductile cast iron or stainless steel alloy, are characterized by exceptional wear resistance and provide a tight seal. Additionally, chrome, phosphate, and nitride coatings enhance durability and corrosion resistance, adapting the rings to the specific operating conditions of the engine. ### Compression Rings Namura NA-20075R compression rings are made of highly ductile cast iron or stainless steel alloy, ensuring excellent sealing and minimizing pressure loss in the cylinder. Chrome, phosphate, or nitride coatings further strengthen the rings and protect them from wear. ### Oil Control Rings Oil control rings consist of three components: two scraper rails made of highly ductile cast iron or stainless steel alloy, coated with chrome, nitride, or phosphate, and a single expander ring made of stainless steel. This design ensures efficient removal of excess oil and prevents it from entering the combustion chamber. By choosing Namura NA-20075R piston rings, you invest in the reliability and optimal performance of your engine.