Information
Japan, 〒105-0012 Tokyo, Minato City, Shibadaimon, 1-chōme−12−１５ 正和ビル
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Overview
- Summary
- NOK is Japan's first oil seal manufacturer, specializing in sealing products, functional parts, and electronic components. The company offers industrial rubber/resin products, vibration and sound isolators, electronic products, industrial functional and special products, functional membrane products, and office automation equipment products, holding a leading position in the global market.NOK is Japan's first oil seal manufacturer, specializing in sealing products, functional parts, and electronic components. The company offers industrial rubber/resin products, vibration and sound isolators, electronic products, industrial functional and special products, functional membrane products, and office automation equipment products, holding a leading position in the global market.
- Key Products/Technologies
- Sealing Products: A diverse range of products including oil seals, O-rings, hydraulic packings, gaskets, Simmerrings, rotary seals, fluid power seals (rod seals, piston seals, wipers, guide rings, damper & steering seals, valve stem seals), accumulators, polyurethane timing belts, hollow fiber membrane modules, mechanical seals, welded metal bellows, rubber bellows mechanical seals, water-resistant O-rings, semiconductor-grade FFKM O-rings, semiconductor-grade FKM O-rings, rotary joints, hybrid seals, magnetic fluid seals, eccentricity compatible seals, polyurethane dust seals, metal-reinforced dust seals, chemical-resistant O-rings, high-speed bi-directional rotary oil seals, rubber-coated metal gaskets, pipe fitting seals, sleeved oil seals, and pressure-resistant oil seals.Sealing Products: A diverse range of products including oil seals, O-rings, hydraulic packings, gaskets, Simmerrings, rotary seals, fluid power seals (rod seals, piston seals, wipers, guide rings, damper & steering seals, valve stem seals), accumulators, polyurethane timing belts, hollow fiber membrane modules, mechanical seals, welded metal bellows, rubber bellows mechanical seals, water-resistant O-rings, semiconductor-grade FFKM O-rings, semiconductor-grade FKM O-rings, rotary joints, hybrid seals, magnetic fluid seals, eccentricity compatible seals, polyurethane dust seals, metal-reinforced dust seals, chemical-resistant O-rings, high-speed bi-directional rotary oil seals, rubber-coated metal gaskets, pipe fitting seals, sleeved oil seals, and pressure-resistant oil seals.
- Core Technologies: Expertise in synthetic rubber, metal rings, and springs for oil seal construction, polymer membrane-based modules for precision filtration, low-friction technology, and concentrated polymer brushes technology for reducing friction in sealing devices.Core Technologies: Expertise in synthetic rubber, metal rings, and springs for oil seal construction, polymer membrane-based modules for precision filtration, low-friction technology, and concentrated polymer brushes technology for reducing friction in sealing devices.
- Electronic Products: Supply of Flexible Printed Circuits (FPC) to major smartphone manufacturers (including Apple) and significant investments in expanding FPC manufacturing for EV batteries.Electronic Products: Supply of Flexible Printed Circuits (FPC) to major smartphone manufacturers (including Apple) and significant investments in expanding FPC manufacturing for EV batteries.
- Chemical Products & Others: Industrial rubber products, phenolic resin molding materials, polyurethane elastomer products, vibration and sound isolating products, high damping rubber (HDR), compressor valves, special lubricants, thermally conductive compound "QLEASE" (insulating thermal conductive resin), flame retardant rubber, heater FPC, and heat resistant FPC.Chemical Products & Others: Industrial rubber products, phenolic resin molding materials, polyurethane elastomer products, vibration and sound isolating products, high damping rubber (HDR), compressor valves, special lubricants, thermally conductive compound "QLEASE" (insulating thermal conductive resin), flame retardant rubber, heater FPC, and heat resistant FPC.
- Core Advantages
- Market Dominance: Securing over 70% market share in the Japanese oil seal market and maintaining a leading position in the global sealing products sector.Market Dominance: Securing over 70% market share in the Japanese oil seal market and maintaining a leading position in the global sealing products sector.
- Technological Innovation and R&D Capabilities: Active research and development to strengthen core interface control technologies, including the development and practical application of next-generation technologies like concentrated polymer brushes.Technological Innovation and R&D Capabilities: Active research and development to strengthen core interface control technologies, including the development and practical application of next-generation technologies like concentrated polymer brushes.
- Broad Product Portfolio and Technological Diversity: Offering a wide range of products and proprietary technologies based on three core business areas: sealing solutions, electronic products, and chemical products, addressing diverse industry needs.Broad Product Portfolio and Technological Diversity: Offering a wide range of products and proprietary technologies based on three core business areas: sealing solutions, electronic products, and chemical products, addressing diverse industry needs.
- Global Manufacturing and Sales Network: Establishment of an extensive global supply chain through 51 overseas group companies in countries including the USA, India, Indonesia, South Korea, Singapore, Taiwan, Thailand, China, Philippines, Vietnam, Malaysia, Czech Republic, Germany, Hungary, and France.Global Manufacturing and Sales Network: Establishment of an extensive global supply chain through 51 overseas group companies in countries including the USA, India, Indonesia, South Korea, Singapore, Taiwan, Thailand, China, Philippines, Vietnam, Malaysia, Czech Republic, Germany, Hungary, and France.
- Strong Foothold in the Automotive Industry: Maintaining business relationships with all major Japanese vehicle manufacturers and proactively developing and supplying products in response to electrification and autonomous driving trends.Strong Foothold in the Automotive Industry: Maintaining business relationships with all major Japanese vehicle manufacturers and proactively developing and supplying products in response to electrification and autonomous driving trends.
- Sustainable Manufacturing and Eco-friendly Product Development: Setting targets for reducing environmental footprint and introducing eco-friendly sealing product lines, as well as developing environmentally conscious technologies such as hollow fiber membrane modules for fuel cell vehicles.Sustainable Manufacturing and Eco-friendly Product Development: Setting targets for reducing environmental footprint and introducing eco-friendly sealing product lines, as well as developing environmentally conscious technologies such as hollow fiber membrane modules for fuel cell vehicles.
- Target Industries
- Automotive industry (engines, transmissions, powertrains, steering systems, hybrid vehicle batteries, EV drive motors and reduction gearboxes, PCU gaskets)Automotive industry (engines, transmissions, powertrains, steering systems, hybrid vehicle batteries, EV drive motors and reduction gearboxes, PCU gaskets)
- Construction machineryConstruction machinery
- Agricultural machineryAgricultural machinery
- Electronic devices (smartphones, office equipment, home appliances)Electronic devices (smartphones, office equipment, home appliances)
- Industrial machinery (hydraulic, pneumatic, power transmission equipment, steel mills, industrial robots)Industrial machinery (hydraulic, pneumatic, power transmission equipment, steel mills, industrial robots)
- AircraftAircraft
- Marine vesselsMarine vessels
- Railroad vehiclesRailroad vehicles
- Semiconductor equipmentSemiconductor equipment
- Green energyGreen energy
- Major Markets
- Indonesia, South Korea, Singapore, Taiwan, Thailand, China, Philippines, Vietnam, India, JapanIndonesia, South Korea, Singapore, Taiwan, Thailand, China, Philippines, Vietnam, India, Japan
- Germany, Czech Republic, Hungary, FranceGermany, Czech Republic, Hungary, France
- USAUSA
- Certifications/Patents
- Possession of a total of 16,341 patents.Possession of a total of 16,341 patents.
- Recipient of the Japan Patent Attorneys Association President's Award for its pressure regulating valve for nickel-metal hydride batteries in hybrid vehicles at the FY2024 Kanto Regional Invention Awards.Recipient of the Japan Patent Attorneys Association President's Award for its pressure regulating valve for nickel-metal hydride batteries in hybrid vehicles at the FY2024 Kanto Regional Invention Awards.
- Received Invention Encouragement Awards for hollow fiber membrane modules for fuel cell vehicles, static sealing members for mechanical seals, and manufacturing methods for seal products.Received Invention Encouragement Awards for hollow fiber membrane modules for fuel cell vehicles, static sealing members for mechanical seals, and manufacturing methods for seal products.
- Awarded an Invention Encouragement Award for gaskets for Power Control Units (PCUs) in electric vehicles at the FY2024 Kyushu Regional Invention Awards.Awarded an Invention Encouragement Award for gaskets for Power Control Units (PCUs) in electric vehicles at the FY2024 Kyushu Regional Invention Awards.
- Received the Shizuoka Prefectural Invention Association President's Award for its impeller for outboard motor engine cooling water circulation at the FY2025 Kanto Regional Invention Awards.Received the Shizuoka Prefectural Invention Association President's Award for its impeller for outboard motor engine cooling water circulation at the FY2025 Kanto Regional Invention Awards.
- Awarded an Invention Encouragement Award for its seal ring for maintaining hydraulic pressure in automatic transmissions.Awarded an Invention Encouragement Award for its seal ring for maintaining hydraulic pressure in automatic transmissions.
- Recipient of the 2025 Society of Polymer Science, Japan (SPSJ) Award for Outstanding Technological Development for research on friction reduction in sealing devices using concentrated polymer brushes technology.Recipient of the 2025 Society of Polymer Science, Japan (SPSJ) Award for Outstanding Technological Development for research on friction reduction in sealing devices using concentrated polymer brushes technology.
- Achieved ISO 9001 quality management certification.Achieved ISO 9001 quality management certification.
- Holding 4,601 patents in Japan and overseas as of the end of fiscal year 2024.Holding 4,601 patents in Japan and overseas as of the end of fiscal year 2024.
Introduction
Location
Japan, 〒105-0012 Tokyo, Minato City, Shibadaimon, 1-chōme−12−１５ 正和ビル
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