## Namura NA-50019-4R Piston Rings 99.94mm - Reliability and Performance Namura NA-50019-4R piston rings with a diameter of 99.94mm are a key element ensuring optimal performance, efficiency, and engine longevity. Often overlooked, these rings play a vital role in sealing the combustion chamber and controlling oil consumption. Namura, known for its high-quality engine components, designs its rings for specific applications, taking into account the type of cylinder liner, its coating, engine size, and stroke type (2 or 4). ### Advanced Materials and Technologies Namura uses advanced materials and technologies to ensure excellent durability and tightness of the piston rings. Both compression and oil rings are made of high-quality alloys, guaranteeing resistance to wear and corrosion. ### Compression Rings Namura NA-50019-4R compression rings are made of highly ductile cast iron or stainless steel alloy. These materials are characterized by excellent wear resistance and provide a tight seal of the combustion chamber. Additional coatings, such as chrome, phosphate, or nitride, increase durability and resistance to extreme temperatures and pressures. ### Oil Rings Oil rings consist of three components: two scraper rails made of highly ductile cast iron or stainless steel alloy, and an expander ring made of stainless steel. The scrapers, coated with chrome, nitride, or phosphate, effectively regulate the amount of oil on the cylinder walls, minimizing oil consumption and preventing it from entering the combustion chamber. ### Technical Parameters: * Piston Diameter: 99.94mm * Brand: Namura * Model: NA-50019-4R By choosing Namura NA-50019-4R piston rings, you are investing in the reliability and performance of your engine.