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NOK Corporation

Company Profile

■URL

https://nok.nokgrp.com/en/

■Address

1-12-15, Shibadaimon, Minato-ku, Tokyo 105-8585 Japan

Business Overview

-A sealing products manufacturer under NOK Group Corporation. The Company develops, manufactures, and sells oil seals and other sealing products, as well as anti-vibration and noise insulation products.

-On October 1, 2026, the Company became a wholly-owned subsidiary of NOK Group Corporation, which was established through a joint share transfer by NOK Corporation and EAGLE Industry Co., Ltd., under the new holding company structure.

-The Company has a capital and business alliance with Germany-based Freudenberg and operates globally.

Shareholders

-Delisted from the Prime Market of the Tokyo Stock Exchange on September 29, 2026.

-On October 1, 2026, the Company became a wholly-owned subsidiary of NOK Group Corporation, which was established through a joint share transfer.

(As of October 1, 2026)

Name or Company Name Investment Ratio (%)
NOK Group Corporation 100.0

Products

-Oil seals
-O-rings
-Rubber-coated metal gaskets
-Seal washers
-Mechanical seals
-Lip seals
-Dust covers
-Industrial rubber products
-Phenolic resin molding materials
-Polyurethane elastomer products
-Vibration and sound isolators
-High damping rubber
-Compressor valves
-Special lubricants
-Flexible printed circuits

Products for Electric Vehicles
-Thermally conductive material "QLEASE" (resin, rubber, clay, conductive)
-Flame retardant O-ring
-Tracking-resistant rubber
-Heater FPC
-Heat Resistant FPC
-High heat & high current resistant FPC
-Anti-corrosive seal & grease for aluminum parts
-Aluminum anti-corrosion coated seal
-Conductive ring
-Automotive FPC
-High-frequency FPC
-Extra-long FPC
-Transparent FPCs
-Flexible radio wave absorber
-Space-saving gasket
-High-speed rotary oil seal
-High-speed bi-directional rotary oil seal
-Low friction technology
-Textured Mechanical Seal for EV Drive Motors and Textured Mechanical Seal for EV Gearbox
-Low-leakage seal ring
-Low-friction seal ring
-PTFE gas seal (high temperature & pressure seal)
-Self-lubricating rubber
-Biomass material O-ring
-Cushion rubber
-Large rubber gaskets, including foldable and spiral types
-Pipe fitting seal
-Rubber electrode for biomedical signals
-Rubber applicable to near-infrared sensor
-Pressure control valve
-Pressure control valve ”Diavent”
-Intercell insulation/elastic rubber sheets
-Pressure-reducing lip seal for electric compressors
-Lip seal for electric water pumps
-Cylindrical lithium-ion battery gasket
-Storage battery lubricants

History

Dec.1939 Established Edogawa Seiki in Katsushika, Tokyo.
Oct. 1948 Renamed as Tokyo Oil Seal Kogyo.
Dec. 1951 Merged with Nippon Yushi Kogyo, and changed Company name to Nippon Oil Seal Kogyo.
June 1954 Head office and plant moved to Ota, Tokyo.
Mar. 1960 Formed a business tie-up with the German company Freudenberg.
Aug. 1960 Built Fujisawa Works (Current Shonan Development Center) in Fujisawa, Kanagawa.
Sept. 1961 Listed on the Nagoya Stock Exchange.
Oct. 1961 Listed on the Tokyo Stock Exchange.
Oct.1961 Transferred headquarters to Chuo-ku, Tokyo.
June 1963 Established Saga Plant (currently Saga business facility) in Nakahara-cho, Saga Pref.
Oct. 1964 Established a subsidiary NIHON SEAL ALL Inc. (currently Eagle Industry Co., Ltd., an
affiliated company).
Jan. 1966 Head office moved to the current location.
Aug. 1967 Established Shizuoka Plant (currently Shizuoka business facility) in Makinohara-shi, Shizuoka Pref.
Apr. 1968 Established a subsidiary, NOK-USA., Inc., currently NOK Inc., in the United States.
April 1968 Established Fukushima Plant (currently Fukushima business facility) in Fukushima, Fukushima Pref.
April 1970 Established Kumamoto Plant (currently Kumamoto business facility) in Asa, Kumamoto.
Dec. 1974 Established Tokai Plant (currently Tokai business facility) in Kikukawa-shi Shizuoka Pref.
Dec. 1976 Established NOK Cluver, a subsidiary.
Dec. 1978 Established NOK Megrastic, a subsidiary.
Jan. 1982 Eagle Industry Co., Ltd., an affiliated company was listed on the Tokyo Stock Exchange.
July 1985 Changed name from Nippon Oil Seal Kogyo to NOK Corporation.
Aug. 1987 Established Nihonmatsushi business facility in Nihonmatushi, Fukushima Pref.
Oct. 1988 Established a subsidiary in Thailand, Thai N.O.K. Co., Ltd.
Mar. 1989 Established NOK EG&G Optelectronics (currently NEOPT Corp.), a subsidiary.
July 1989 Its U.S. subsidiary, NOK Inc., established Freudenberg NOK GP with the U.S. subsidiary of Freudenberg.
Aug. 1989 Established Tsukuba Technology Research Center in Tsukuba, Ibaraki Pref.
Jun. 1995 Established a subsidiary in China, Wuxi NOK-Freudenburg Co., Ltd.
July,1996 Established a subsidiary, NOK Asia Co., Pte. Ltd., in Singapore.
Mar,2000 Started negotiations with Freudenberg GmbH with regard to the O-ring business, focusing on marketing in response to global shared ordering.
Apr,2001 Invested 1 billion yen to establish a wholly-owned subsidiary and plant in Thailand to produce HDD components. Will shift production from Japanese plants and concentrate it in this new plant, which currently produces 30% of total sales. Projected increase to 40%.
July 2001 Concentrated the main oil seal business at Fukushima business facility. Transferred and integrated the Fujisawa business facility's machine tool oil seal R&D functions to the Fukushima facility.
Apr. 2002 Span off a subsidiary UNIMATEC from another subsidiary Nippon Mektron, Ltd.
Jan. 2004 Newly established its Tottori plant in Nambucho, Tottori Prefecture.
Mar. 2004 Acquired all the shares in Hokushin Corporation and made it its subsidiary.
Oct. 2004 Delisted from the Nagoya Stock Exchange.
Mar. 2005 Acquired all the shares in Nitto Kogyo Corporation and made it its subsidiary.
Apr. 2005 Established Shonan Development Center in Fujisawa City, Kanagawa Pref.
Apr. 2007 Consolidated its subsidiaries, Hokushin Corporation and Nitto Kogyo Corporation, renaming them as a new company, Synztec Co., Ltd.
Apr. 2010 Established Kitaibaraki plant in Ibaraki Pref., Japan.
Oct. 2013 Split off Synztec Co., Ltd. (a subsidiary), establishing Synztec Co., Ltd. as the split-off surviving company.
Dec. 2018 Newly established Tsukuba plant in Tsukuba, Ibaraki Pref., Japan.
Apr. 2022 Moved from the First Section of the Tokyo Stock Exchange to the Prime Market in line with TSE’s reorganization in April 2022.
Oct. 2023 Acquired stock shares in Estoh Co., Ltd., turning it into a subsidiary.
Jan. 2026 Transferred all stock shares of SYNZTEC CO.,LTD. and its subsidiaries.
Apr. 2026 The Company reorganized its corporate structure, which had 18 manufacturing subsidiaries in Japan. As a result of the reorganization, there are now five companies: NOK Tohoku Corporation, NOK Kita-Kanto Corporation, NOK Shizuoka Corporation, NOK Tottori Corporation, and NOK Kyushu Corporation.
Sept. 2026 Delisted from the Prime Market of the Tokyo Stock Exchange.
Oct. 2026 NOK Group Corporation was established through a joint share transfer by NOK Corporation and EAGLE Industry Co., Ltd. The Company became a wholly-owned subsidiary of NOK Group Corporation under the new holding company structure. NOK Group Corporation listed its common stock on the Prime Market of the Tokyo Stock Exchange on the same day.

Supplemental Information 1

MarkLines Customer Support

9:00 a.m. - 5:30 p.m. Mon.-Fri. (excluding national holidays)
japan Japan
Roppongi, Minato-ku, Tokyo, Japan
+81-3-4241-3907
USA USA
Novi, Michigan, USA
+1-248-327-6987
MEX Mexico
León Guanajuato, Mexico
+52-477-796-0560
DEU Germany
Frankfurt am Main, Germany
+49-69–904-3870-0
CHN China (Shanghai)
Huangpu District, Shanghai, China
+86-21-6212-6562
CHN China (Shenzhen)
Nanshan District, Shenzhen, Guangdong
+86-755-2267-1725
THA Thailand
Klongtoey, Bangkok, Thailand
+66-2-665-2840
IND India
Gurgaon, Haryana, India
+91-124-4048779