Mission statement

Our customers are our top priority.
We pursue profit through diligence in our daily business. At the same time,
we have a global perspective and protect the global environment.
We develop our personality and nurture a happy company culture
where all associates find things worth doing, and contribute to society and the entire world.

Ichiro Miyamoto
Nippon Leakless Corporation

Company overview

Company name
Nippon Leakless Corporation
Head Office
33-8, Nishi-Shinbashi 2-Chome, Minato-ku, Tokyo
Saitama Office
24-17, Harayama 2-Chome, Midori-ku, Saitama
Kyushu Office
8-1, Mushozuminami, Onga-cho, Onga-gun, Fukuoka
Tochigi Plant
Fujimidai Kogyo Danchi, 1181-138, Fujita, Nasukarasuyama-shi, Tochigi
Date established
November 29, 1955
President Ichiro Miyamoto
210 million yen
Accounting period
December 31
Line of business
Manufacturing and sales of gaskets for automobiles and packing for general industries
Sales volume
6.29 billion yen as of December 2017
Major customers
Honda Motor Co., Ltd. / Yamaha Motor Co., Ltd. / NICHIAS Corporation

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  • Greeting・Mission statementPDF(pdf/530KB)
  • Company overview・Global networkPDF(pdf/411KB)
  • HistoryPDF(pdf/416KB)
  • Efforts for acquisition of ISO certification/environment・Conflict-free procurementPDF(pdf/466KB)
  • [Technological research & development] Product developmentPDF(pdf/657KB)
  • [Technological research & development] Research & development of materials/Academic LiteraturePDF(pdf/642KB)
  • [Product information] Products for automobilesPDF(pdf/708KB)
  • [Product information] Products for motorcycles and general purposePDF(pdf/603KB)
  • [Product information] Packings for general industries/Gaskets/Expansion jointsPDF(pdf/715KB)
  • Offices in JapanPDF(pdf/838KB)
  • Overseas offices(1)PDF(pdf/937KB)
  • Overseas offices(2)PDF(pdf/1,200KB)