## Namura NA-10008-4R Piston Rings - Essential for Engine Efficiency Often overlooked, piston rings are a crucial component affecting engine performance, durability, and efficiency. Namura NA-10008-4R piston rings, designed for pistons with diameters of 92.96mm and 92.97mm, guarantee top quality and precision. Namura, known for its attention to detail and use of innovative technologies, delivers a product that meets the expectations of even the most demanding users. ### Materials and Construction The materials used in the production of Namura NA-10008-4R piston rings are a key factor influencing their performance. The ring design is precisely tailored to its specific application, taking into account the type of cylinder sleeve, its coating, engine size, and stroke type (2 or 4). ### Compression Rings Namura NA-10008-4R compression rings are made of highly ductile cast iron or stainless steel alloy. Both materials offer excellent wear resistance and provide a gas-tight seal. Additionally, depending on the model, chrome, phosphate, and nitride coatings are applied to meet the demands of specific applications. The use of these materials guarantees long life and reliability. ### Oil Rings Namura NA-10008-4R oil rings consist of three separate components: two scraper rails made of highly ductile cast iron or stainless steel alloy, coated with chrome, nitride, or phosphate, and a single expansion ring made of stainless steel. This solution ensures optimal lubrication and minimizes oil consumption. By choosing Namura NA-10008-4R piston rings, you are investing in the quality, performance, and longevity of your engine.