What Nakashima Co. does

Nakashima Co., Ltd. (株式会社ナカシマ) is a privately held Japanese custom rubber molded products manufacturer headquartered in Kakamigahara, Gifu Prefecture, founded in January 1970 and now operating for over 50 years. The company's core offering is a made-to-order (受注生産) portfolio of industrial rubber components including plug boots, grommets, bellows, hoses, gaskets, packings, caps, covers, and rubber sheet materials, all engineered for functionality, safety, and durability across diverse industrial sectors. Production technology centers on rubber molding with injection molding capability adopted in December 1984, supplemented by prototype and joint development services from mold design through mass production.

The company is founder-controlled under Representative Director Daisuke Nakashima (中島大輔), with 32 staff at the Japanese headquarters (11 male, 21 female, including 4 part-time) and an additional wholly-owned overseas production subsidiary, Nakashima Rubber Thailand Co., Ltd., which operates two factories in Ayutthaya (Rojana Industrial Estate, est. 1995) and Prachinburi (Factory 304, est. 2013). This offshore footprint is the company's stated source of cost and quality advantage versus purely domestic Japanese competitors. ISO 9001 certification (ISAQ791) was obtained for the headquarters in 2013 and a refreshed quality policy is published for 2026.

Revenue is generated through a sales-led, direct-channel model: orders are accepted by phone, FAX, and EDI, with quote-based pricing (no public price list), bank-transfer payment terms set at contract signing, and standard delivery within seven days. The customer base is enterprise industrial buyers, with four named majors — Gomu Inaki, Construction Rubber, Diamond Electric, and Tigers Polymer — spanning rubber, construction, electronics, and polymer sectors. Registered capital is ¥15 million (~$100K USD), there is no public listing or external investment, and no AI/ML capabilities are present.

Name

Nakashima Co.

Legal name

株式会社ナカシマ

Website

https://nakashima-net.co.jp

Company type

Private

Founded year

1970

Operating status

Operating

Short description

Nakashima Co. is a Japan-based custom rubber molded products manufacturer founded in 1970. It produces made-to-order industrial rubber components including grommets, bellows, hoses, gaskets, and seals, serving enterprise industrial customers via direct sales and a wholly-owned Thailand manufacturing subsidiary.

Ownership category

akta.pro rank

Product category

Custom Industrial Rubber Manufacturing

NAICS

Other Rubber Product Manufacturing (32629), Rubber Product Manufacturing (3262)

SIC

Fabricated Rubber Products, Nec (3060)

akta.pro primary industry

Molded & Extruded Industrial Rubber Parts (Custom Components) (IMANALAG)

akta.pro secondary industry

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ)

Keywords

• Custom rubber molding
• Industrial rubber components
• Rubber product manufacturing
• Rubber sheet materials
• Prototype rubber development

Headquarters

HQ city

Kakamigahara

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D

Revenue model

1. Rubber Product Manufacturing & Sales: All rubber products are made to order (受注生産), serving diverse industrial needs. The company manufactures and sells rubber components including plug boots, grommets, bellows, hoses, gaskets, packings, caps, and covers, as well as rubber sheet materials.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Nakashima Co. manufactures and sells custom rubber molded products on a made-to-order (受注生産) basis, serving diverse industrial sectors. The product portfolio includes plug boots, grommets, bellows, hoses, gaskets, packings, caps and covers, other specialty rubber components, and rubber sheet materials. The company also offers prototype development and joint development services from mold design through mass production, with domestic production in Kakamigahara, Gifu Prefecture, supplemented by a Thai production subsidiary.

Product overview

Nakashima Co. is a custom rubber parts manufacturer offering a comprehensive portfolio of molded rubber products, all produced to order. The product lineup includes plug boots (プラグブーツ), grommets (グロメット), bellows (ジャバラ), hoses (ホース), gaskets and packings (ガスケット・パッキン), caps and covers (キャップ・カバー), and other specialty rubber components. These products are designed for diverse industrial sectors, emphasizing functionality, safety, and durability. The company also provides prototype development and joint development services, accepting collaborative development projects across all industries, from mold design through to mass production.

Differentiator

Problem solved

Functional benefit

Products and services

• Plug Boots (プラグブーツ関連) Custom-made rubber plug boots providing protective sealing for electrical connections and components in automotive and industrial applications. Made-to-order product for B2B industrial buyers.
• Grommets (グロメット関連) Custom-made rubber grommets for cable routing, wire protection, and sealing in various industrial and automotive applications. Made-to-order product for B2B industrial buyers.
• Bellows (ジャバラ関連) Flexible custom-made rubber bellows designed for vibration dampening, dust protection, and movement accommodation in mechanical systems. Made-to-order product for B2B industrial buyers.
• Hoses (ホース関連) Custom-made rubber hoses for fluid transfer applications across various industrial sectors. Made-to-order product for B2B industrial buyers.
• Gaskets and Packings (ガスケット・パッキン関連) Custom-made rubber sealing components including gaskets and packings engineered for leak prevention and pressure containment in diverse operating environments. Made-to-order product for B2B industrial buyers.
• Caps and Covers (キャップ・カバー関連) Custom-made protective rubber caps and covers for sealing, dust protection, and surface finishing applications. Made-to-order product for B2B industrial buyers.
• Other Custom Rubber Molded Parts (その他) Additional custom-made rubber molded parts and components for specialized industrial applications beyond the standard product categories. Made-to-order product for B2B industrial buyers.
• Rubber Sheet Materials (ゴムシート) Rubber sheet materials sold as part of Nakashima's product lineup for diverse industrial applications. Made-to-order product for B2B industrial buyers.
• Prototype Development and Joint Development Services Custom prototype development and collaborative product development services, handling everything from mold design to mass production for various industries. Service offered to B2B industrial customers across sectors.

Named customers4 records

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• Nakashima Rubber Thailand Co., Ltd. (ナカシマラバータイランド)coreOthers · 1 June 1994Overseas production subsidiary established in Thailand in June 1994. Operates factories in Ayutthaya Province (Rojana Industrial Estate, est. 1995) and Prachinburi Province (Factory 304, est. 2013). Enables the company to offer lower pricing and higher quality compared to competitors through offshore manufacturing.

Scale indicators3 records

Recent moves8 records

Expansion highlights4 records

Regional players

• Daemar Inc. North American supplier of sealing products, gaskets, and custom rubber components. Comparable product offering and custom-molding model but serves a different geographic market than the Japan-domestic Nakashima.

Broad incumbents

• Toyoda Gosei Co., Ltd. Large Japanese rubber and polymer product manufacturer specializing in automotive sealing, vibration-damping, and functional rubber parts. A much larger incumbent serving overlapping end-markets (especially automotive plug boots and grommets).
• Sumitomo Rubber Industries, Ltd. Major Japanese rubber conglomerate producing tires, industrial rubber products, and sports goods. Broad incumbent that competes in many of the same industrial rubber categories as Nakashima at vastly larger scale.

Direct peers

• Fuji Latex Co., Ltd. Japanese custom rubber product manufacturer specializing in dipped latex and molded rubber components for industrial and medical applications. Closely comparable SME-scale custom rubber molder.
• Pacific Industries Co., Ltd. Japanese manufacturer of automotive rubber and plastic components, including vibration-damping and sealing products. Comparable in serving automotive/industrial rubber part applications with molded rubber technology.
• Tigers Polymer Corporation: Japanese polymer and rubber products manufacturer. Notably listed as one of Nakashima's named major customers, indicating overlapping product technology and direct industry adjacency.
• Bando Chemical Industries, Ltd. Japanese manufacturer of industrial rubber products including belts, hoses, and rubber molded components, serving similar industrial end-markets with comparable made-to-order capabilities. Most directly comparable Japanese rubber molding peer to Nakashima.
• Yamashita Gasket Co., Ltd. Japan-based custom gasket and sealing component manufacturer serving industrial customers. Direct overlap with Nakashima's gaskets and packings product category and similar custom, made-to-order business model.
• Nichias Corporation: Japanese manufacturer of gaskets, packings, and sealing products — directly overlapping with Nakashima's gaskets/packings product line and serving similar industrial plant and equipment customers.
• Nitta Corporation: Japan-based industrial rubber products manufacturer producing belts, hoses, rubber functional parts, and molded rubber components for industrial customers. Similar B2B industrial rubber molding model with comparable customer profile.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nakashima Co.