## Namura NX-10025R Piston Rings - Reliability and Performance for Your Engine Namura NX-10025R piston rings, designed for pistons with diameters of 66.34mm, 66.35mm, and 66.36mm, are a crucial element ensuring optimal operation, efficiency, and longevity of your engine. Often overlooked, piston rings play a fundamental role in sealing the combustion chamber and controlling oil consumption. Namura, known for its high-quality motorcycle and scooter parts, offers piston rings designed for specific applications, guaranteeing a perfect fit and reliability. ### Materials and Technologies The choice of materials for piston ring production is crucial for their performance. Namura uses carefully selected high-ductility cast iron or stainless steel alloys, characterized by excellent wear resistance and providing a tight seal. In addition, depending on the model and application, the rings can be coated with chrome, phosphate, or nitride, which further increases their durability and resistance to extreme operating conditions. ### Compression Rings Compression rings, made of high-ductility cast iron or stainless steel, ensure the tightness of the combustion chamber, minimizing pressure loss and maximizing engine efficiency. Chrome, phosphate, or nitride coatings further enhance their resistance to wear and corrosion. ### Oil Rings Oil rings consist of three components: two scraper rails made of high-ductility cast iron or stainless steel, and one expander ring made of stainless steel. The scraper rails effectively remove excess oil from the cylinder, preventing it from burning and ensuring optimal lubrication. Chrome, phosphate, or nitride coatings increase their durability and resistance to wear. By choosing Namura NX-10025R piston rings, you invest in quality and reliability, ensuring optimal performance of your engine for a long time.