Headquartered in Saitama, Japan, Nippon Piston Ring Co., Ltd. is an international manufacturer and distributor of a broad spectrum of engineered components. The company's primary focus lies in engine parts for both the automotive and marine industries. Its automotive product line encompasses piston rings for a variety of internal combustion engines (such as those in motorcars and motorcycles), valve seat inserts, and other essential engine elements, including composite camshafts, cylinder liners, and alloy cast iron components. Furthermore, Nippon Piston Ring produces piston rings for industrial and marine applications, alongside large-scale industrial piston rings and precision metal injection molding parts utilized in industrial equipment, office automation devices, and leisure goods. Their portfolio also extends to compressor components and specialized medical instruments, specifically dental implants. This long-established firm has been operating since its founding in 1931.