NOK Corporation manufactures, imports, and sells seal products, industrial mechanical parts, hydraulic and pneumatic equipment, nuclear power equipment, synthetic chemical products, and electronic and various other products in Japan and internationally. It operates through Seal Business, Electronic Product Business, Roll Business, and Other Businesses segments. The company's seal products include oil seals, packings, O rings, soft metals, seal washers, mechanical and hybrid seals, lip and segment seals, static metal gaskets, brush seals, stern tube seals, kalrez, and magnetic fluid seals; and electronic products comprise flexible printed circuits and precision rubber/resin products. It also provides rubber vibration and sound isolating products for automobiles and precision information devices; and synthetic rubber materials, industrial and iron rubber products, iron-rubber belts, iron-rubber products for road safety, engineering plastic products, industrial chemical, and phenolic resin molding materials. In addition, the company offers water-purifier membrane modules, industrial membrane modules, hollow fiber membrane, and humidifying membrane modules; functional products and special products, including actuators, accumulators, metallic bellows, couplings, carbon bearings, recoil starters, products for household appliances, compressor valves, special lubricants, Gleitpan coating materials, and water and oil repellen; and office automation equipment products, as well as engages in the installation work and other activities. NOK Corporation was incorporated in 1939 and is headquartered in Tokyo, Japan.