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  1. Home
  2. Rubber products
  3. ダイコー 本社
Rubber products
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ダイコー 本社

EstablishmentJune 1984
capital1000Ten thousand
number of employees80
addressOsaka/Nishinari-ku, Osaka-shi/Nanjin Guard 4-4-12
phone06-6657-0374
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last updated:Aug 08, 2026
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  • Products/Services(497)
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ダイコー Company Overview

Leave it to us for gaskets, packing, and industrial products! We cut various materials with a water jet (high-pressure water cutting)!

Daiko is a manufacturer specialized in processing various industrial products, including gaskets and packing. With industry-leading processing equipment, including one of Japan's largest water jet cutting machines, and a wide range of materials such as joint sheets, rubber, resin, and metal, we meet our customers' diverse needs. Leveraging the technology and experience we have cultivated over 50 years, we provide high-quality, short-lead-time, and low-cost products to contribute to solving our customers' challenges. To respond to our customers' varied needs, Daiko's production bases are equipped with various processing facilities. Among them, the water jet cutting machines, with a total of four installed at our Osaka headquarters and Tokyo branch, boast one of the largest scales in the country. The maximum processing range is W4,000 × L5,500 mm, allowing for the high-precision manufacturing of large-diameter gaskets and packing. By maximizing material efficiency, we achieve the provision of 'high quality at low cost.'

Business Activities

Manufacturing and sales of gaskets, packing, and industrial products. ■Products - Gaskets for general fluids - Gaskets for high pressure and high temperature - Exhaust system gaskets - Expanded graphite gaskets - Seal gaskets for valves and pumps - Gaskets for boilers and water gauge cocks - Insulating bolts, insulating sleeves, insulating washers - Rubber and sponge-related products - Resin materials ■Handling Manufacturers - Nichias Corporation - Iruma River Rubber Co., Ltd. - Japan Valqua Ltd. - Mitsubishi Chemical Corporation - Tiger Polymer Corporation In addition to major gasket manufacturers such as Nichias and Valqua, we offer a lineup of products from various manufacturers including rubber, metal, and resin. We can also propose our own brand products that offer advantages in terms of delivery time and cost. Please feel free to consult with us.

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Products/Services (497)

Features of insulated mica sleeves and insulated PTFE sleeves, and arrangements for custom dimensions. product image
Features of insulated mica sleeves and insulated PTFE sleeves, and arrangements for custom dimensions.
[Technical Proposal] Selection Criteria for Insulating Mica Sleeves and Mica Washers product image
[Technical Proposal] Selection Criteria for Insulating Mica Sleeves and Mica Washers
List of safety regulations and statutory inspections for boilers and pressure vessels product image
List of safety regulations and statutory inspections for boilers and pressure vessels
Correct Selection of Seal Materials and Gaskets in Fan Manufacturing product image
Correct Selection of Seal Materials and Gaskets in Fan Manufacturing

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catalog(181)

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Processing examples of Teflon (PTFE) long hole gaskets

Processing examples of Teflon (PTFE) long hole gaskets

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Processing example of 0.2t thin Teflon gasket

Processing example of 0.2t thin Teflon gasket

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Examples of acrylic sign processing

Examples of acrylic sign processing

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Examples of processing irregular gaskets

Examples of processing irregular gaskets

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news(10)

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Notice of ISO 9001:2015 Certification Acquisition

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Daiko Corporation has obtained certification for the international standard of the quality management system, "ISO 9001:2015," with the aim of improving customer satisfaction and continuously strengthening our quality management system. We will continue to contribute to solving our customers' challenges by providing high-quality industrial products.

Aug 08, 2026

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Featured in the high school student job support book "Start!" and the website "Job Start."

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Recently, Daiko Co., Ltd. has published a job support book for high school students titled "Start! (Osaka Prefecture Edition 2026)" and has included company information on the related career education support website "Job Start." In this publication and on the site, the role of "gaskets and packing" in supporting social safety, our well-equipped facilities, and interviews with young employees active on the front lines are detailed, showcasing the appeal of Daiko's manufacturing.

Aug 06, 2026

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Daiko Co., Ltd. has been featured in the 'Job Book for Junior High School Students.'

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Recently, Daiko Co., Ltd. has been featured in the "Job Book for Junior High School Students," which is published as a supplementary educational material for "Career Education" promoted by the Ministry of Education, Culture, Sports, Science and Technology. This publication is a career education support booklet created to convey the significance of work and the appeal of local businesses to junior high school students in the community. In Daiko's section, we provide an easy-to-understand explanation for students about the role of "gaskets and packing," which quietly supports everything from everyday life to industry, as well as insights into the manufacturing field.

Aug 06, 2026

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Detailed information

Company name ダイコー 本社
number of employees80
Contact addresspostalcode 557-0063 Osaka/ Nishinari-ku, Osaka-shi/ Nanjin Guard 4-4-12View on map TEL:06-6657-0374 FAX:06-6657-0397
Key Partners~Main Products~ ★Gaskets and Packing Daiko Co., Ltd. Nippon Asahi Glass Co., Ltd. Nihon Vulcan Industry Co., Ltd. Nihon Pillar Industry Co., Ltd. Air Water Mach Co., Ltd. ★Rubber and Sponge Iruma River Rubber Co., Ltd. Osaka Rubber Co., Ltd. Tiger Polymer Co., Ltd. Kureha Elastomer Co., Ltd. Inoac Corporation San Polymer Co., Ltd. Nobukawa Co., Ltd. ★Resin Materials Nippon Asahi Glass Co., Ltd. Nihon Vulcan Industry Co., Ltd. Yodogawa Hu-Tech Gore Japan, Inc. Mitsubishi Chemical Corporation Please feel free to contact us regarding other manufacturers and materials.
Business LocationsClick here for the list
Industry Rubber products
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