Hayakawa Rubber Co., Ltd.

/ Rubber Products

Hiroshima Prefecture

~Developing Waterproof Material to Create a New Market with Overwhelming Market Share~

Established in 1919

Corporate Strengths

We develop products with an overwhelming share in niche markets, and create our own markets. We have continued to maintain an overwhelming market share for unique waterproof materials that are used for concrete structures. We also manufacture industrial rubber that blocks radiation, and develop adhesives for smartphones.

Unique, Best-Selling Products and Services

“Spanseal” waterproof material for concrete(Domestic share: 30%)

“Spanseal”, developed as a waterproof material for concrete and fully marketed in 1967, has continued for more than 50 years as a unique product with top market share. It is an unheated type of adhesive plastic material that uses recycled butyl rubber that has undergone special treatment. It adheres with cement during the hydration reaction process of wet concrete, thus creating a waterproof effect.

Appeal to New Graduates/Mid-Career Recruits

During the 100 years since the company was established, we have been developing products that make use of the functionality of rubber. We manufacture and sell waterproof material for underground concrete structures, waterproof material for rooftops, and sound insulation and damping materials for homes. Our work environment is very attractive, with two days off each week and paid vacation that is easy to schedule according to workers’ request.

  • “Spanseal” reactive adhesive waterproof plate


  • Application of “Spanseal”

Company profile

Address 5351 Minamioka, Minoshima-cho, Fukuyama City, Hiroshima Prefecture
TEL (084)954-7801
URL https://www.hrc.co.jp
Capital ¥494 million
Number of employees 363
Sales ¥9,724 billion
Main overseas locations Thailand
Hiring foreigners 4 foreigners hired in the past,willing to hire more

Pick up Companies

  1. Asahi Mekki, Inc.

  2. Nishi-F Co., Ltd.

  3. Shigiya Machinery Works Ltd.

  4. Oasa Electronics Co., Ltd.

  5. Fukuyama Rubber Ind. Co., Ltd.