ENVALITH
西川ゴム工業株式会社 logo

NISHIKAWA RUBBER CO.,LTD.

5161Standard MarketRubber Products

西川ゴム工業株式会社 logo
NISHIKAWA RUBBER CO.,LTD.5161

Japan

Largest segment centered on domestic automotive sealing products

PeriodCurrentPreviousChange
Net sales (segment total)¥57,863 million (FY2026, ending March 2026)¥57,710 million (FY2025, ending March 2025)
Net sales to external customers¥53,630 million (FY2026, ending March 2026)¥53,250 million (FY2025, ending March 2025)
Operating income (segment income)¥4,095 million (FY2026, ending March 2026)¥4,767 million (FY2025, ending March 2025)
Segment assets¥117,547 million (FY2026, ending March 2026)¥107,344 million (FY2025, ending March 2025)
Capital expenditures (increase in tangible and intangible fixed assets)¥2,972 million (FY2026, ending March 2026)¥3,347 million (FY2025, ending March 2025)
Depreciation and amortization¥2,956 million (FY2026, ending March 2026)¥2,613 million (FY2025, ending March 2025)

Business Details

The domestic business segment of Nishikawa Rubber Co., Ltd. Its core products are Automotive Rubber & Resin Sealing Products (weatherstrips, glass run channels, etc.) and Automotive Interior & Exterior Products, supplied to major automakers including Toyota, Honda, Mazda, and Nissan. The segment also handles General Industrial Materials such as residential exterior wall joint materials and skincare products. As the core segment accounting for approximately 47% of consolidated net sales, manufacturing and processing are handled by domestic consolidated subsidiaries such as Nishikawa Bussan Co., Ltd. and Nishikawa Rubber Yamaguchi Co., Ltd.

Recent Overview

Net sales rose slightly, but operating income fell 14.1% year on year due to increased human capital investment

In the Japan segment for FY2026 (ending March 2026), although domestic automobile production volume decreased year on year, sales efforts secured a slight increase in net sales to ¥57,863 million (up ¥152 million, or 0.3%, year on year). On the other hand, operating income declined to ¥4,095 million (down ¥672 million, or 14.1%, year on year), due to factors including increased human capital investment. The company continued to promote the brand strategy for the lightweight, quiet, differentiated product "E Square®," and continued to accelerate activities by the Second Sales Division aimed at strengthening promotion toward European automakers.

Key Products

product
Automotive Weatherstrip (Sealing Products)

A core product that ensures air-tightness, water-tightness, and sound insulation for vehicle bodies. It is marketed under the differentiated brand "E Square®," which emphasizes light weight and quietness, and the company is promoting expansion of domestic market share and technology transfer to overseas affiliated companies.

product
Automotive Interior & Exterior Products

Window frame sealing parts including glass run channels and interior trim-related products. The segment supports multiple vehicle models from major automakers, building a stable supply system through expansion of order-received vehicle models.

product
General Industrial Materials

As a business portfolio outside the automotive industry, the segment offers architectural sealing materials and rubber products for daily necessities, positioned to diversify risk from fluctuations in automobile production volume.

Growth Drivers

  • Expansion of domestic market share for lightweight, quiet differentiated products under the "E Square®" technology brand, along with promotion of technology transfer to overseas affiliated companies
  • Strengthened promotion activities targeting European automakers (expansion of orders from European makers through accelerated activities by the Second Sales Division)
  • Shortened development lead times and enhanced competitiveness through AI-driven product, mold, and material design development
  • Expansion of the business portfolio into General Industrial Materials outside the automotive industry
  • Mitigation of the impact of declining domestic automobile production through expansion of the company's order-received vehicle models

Risks

  • Risk of subdued demand due to declining domestic automobile production volume (which also declined year on year in FY2026, ending March 2026)
  • Rising fixed costs and pressure on profits due to wage increases and increased human capital investment (the main cause of the 14.1% decline in operating income for the period)
  • Continued escalation of raw material and logistics costs
  • Risk of order fluctuations due to changes in production plans at major customers (Toyota, Honda, Mazda, Nissan)
  • Ongoing costs associated with internal control enhancement projects

Last updated: June 24, 2026