ダイコー List of Products and Services

In the maintenance of piping flanges, "electrolysis" is a serious issue that can shorten the lifespan of equipment and potentially lead to significant leakage accidents. Particularly, caution is required in piping lines that combine different types of metals. This page provides a detailed explanation of the mechanisms behind electrolysis and effective "insulation" measures to prevent it. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

Gaskets are sealing materials used at the joints of machinery and piping, primarily serving to prevent fluid leaks. In plant maintenance and machinery equipment, gaskets are extremely important components. However, improper selection or management can lead to serious accidents or production stoppages. If you have any concerns or requests regarding gaskets, please feel free to consult us. Based on our years of experience and expertise, we will do our utmost to support you in solving your challenges. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.

The RCF regulation is a regulation based on the revised Industrial Safety and Health Act that came into effect on November 1, 2015, aimed at preventing health hazards for workers handling Refractory Ceramic Fibers (RCF). As a result, RCF has been designated as a specific chemical substance (Category 2 controlled substance), and businesses are required to implement strict exposure prevention measures. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

Asbestos-containing products in Japan were generally prohibited from manufacturing and use as of September 1, 2006, and disappeared from the market, with some exceptions. Furthermore, including products that had been granted a grace period, a complete ban was implemented on March 1, 2012. However, since regulations have been gradually strengthened, asbestos products that were manufactured and used in the past still remain in many of our familiar buildings and facilities. Here, we will provide a detailed explanation of the history of asbestos regulation and the measures currently required. *For more detailed information, please refer to the related links. For further inquiries, feel free to download the PDF or contact us.*

Gaskets and packing are both important "sealing materials" that prevent the leakage of liquids and gases from machinery and piping. However, the roles of these two are clearly different depending on the presence or absence of "movement" in the places where they are used. On this page, we will clearly explain the differences and correct applications of each, along with diagrams for better understanding. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

Do you have any of these issues with leak prevention in PVC piping? "I tightened it too much to stop the leak, and the flange cracked." "The tightening varies by worker, leading to inconsistent construction quality." "I thought I tightened it well, but it's still leaking." Unlike metal, PVC piping cannot be tightened with excessive force. Therefore, standard sheet gaskets require a delicate balance of "not leaking, but not breaking from over-tightening," which always carries a risk of leakage. *For more details, you can view the related links. For more information, please download the PDF or feel free to contact us.

Gaskets are essential for flange connections in piping, but did you know there are two types called "FF" and "RF"? These two types have significantly different shapes and areas of sealing surfaces, and choosing the wrong one can lead to serious issues such as leaks. In this article, we will clearly explain the fundamental differences between FF gaskets and RF gaskets, their respective features, and how to choose the right one. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

The vortex gasket (spiral gasket) is a high-performance sealing material suitable for piping flanges under severe conditions such as high temperature and high pressure. Its unique structure allows for excellent sealing performance and durability. This page will clearly explain the basics of vortex gaskets and the "selection method" to choose the right product for your equipment, step by step. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.

An asbestos joint sheet is a type of sheet-like gasket used at the flange of piping and the joints of equipment. Asbestos fibers, primarily made from heat-resistant, chemical-resistant, and strong asbestos, are used as the main raw material. Rubber, in the form of natural or synthetic rubber, is added as a bonding agent. This provides flexibility and sealing properties. Filler materials, along with other chemicals or fillers, are mixed in to enhance additional performance. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.

The RoHS Directive (Restriction of Hazardous Substances Directive) established by the EU restricts the use of certain hazardous substances in electrical and electronic equipment, making it an unavoidable environmental regulation for manufacturers worldwide. "RoHS-compliant gaskets" use materials that guarantee the absence of these regulated substances and are adopted by many customers. *For detailed information, please refer to the related links. For more information, you can download the PDF or feel free to contact us.*

Joint sheet gaskets are widely used as sealing materials in various fields of piping. However, to maximize their performance and ensure safe use, it is essential to select the appropriate type based on the fluid and operating conditions, as well as to carry out correct installation. This article explains the selection criteria for joint sheet gaskets, as well as important points to consider during installation and maintenance. *For detailed content of the column, please refer to the related link. For more information, feel free to download the PDF or contact us.

Vortex gaskets are used in many plants and facilities due to their excellent sealing performance. However, to maximize their performance, proper product selection during the design phase and correct handling during installation are essential. This article comprehensively explains important precautions for using vortex gaskets. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

In food factories and manufacturing lines, the gaskets used are very important components that are directly related to the safety of the products. If, by any chance, harmful substances migrate (leach) into the food due to the material of the gasket, it could lead to serious health hazards or product recalls. Therefore, gaskets that come into direct contact with food or may come into contact with it must meet the strict safety standards set by Japan's Food Sanitation Act. This article will clearly explain the important points for selecting safe gaskets that comply with the Food Sanitation Act. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

Is it leaking again from the packing? Despite multiple repairs, we can't identify the cause." Are such concerns causing work on-site to come to a halt? In this article, we will thoroughly explain the three main causes of packing leaks and provide specific countermeasures that can be practically implemented from the perspective of the site. We encourage equipment maintenance personnel and site leaders to make use of this information. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.

Many leakage troubles from gaskets are not due to defects in the products themselves, but rather stem from "handling" factors such as design, storage, and tightening methods. To fully utilize the performance of gaskets and ensure safe plant operations, we will explain the important points that should be observed at each stage from design to installation. *For detailed content of the column, you can view it through the related link. For more information, please download the PDF or feel free to contact us.*

Gasket paste is a very effective sealing aid that improves the sealing performance of gaskets and prevents burning onto flanges. However, to maximize its effectiveness, it is essential to use it based on correct knowledge. Here, we will introduce important points to consider when using gasket paste, as well as representative products. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

The Gore Hyper Sheet Gasket, made entirely of clean, flexible, and highly chemical-resistant expanded polytetrafluoroethylene (ePTFE), demonstrates excellent sealing performance across a wide range of applications, from semiconductor manufacturing equipment to general industry. The Gore Hyper Sheet Gasket is a sheet gasket made of 100% ePTFE, combining flexibility, processability, heat resistance, chemical resistance, creep resistance, and cleanliness. Its high compressibility allows it to easily conform to somewhat rough flanges and uneven surfaces, ensuring a reliable seal. *For detailed information, please refer to the related links. For more information, you can download the PDF or feel free to contact us.*

Nichias Soft Seal is a soft-type gasket made of 100% PTFE (fluororesin). It is very soft and can be easily installed on complex sealing surfaces, solving sealing challenges for various equipment. Due to its softness, it conforms well to somewhat rough flange surfaces and distorted sealing surfaces, demonstrating reliable sealing performance. *For detailed information, please refer to the related links. For more details, you can download the PDF or feel free to contact us.

Is there a problem at your site regarding seals, such as 'leaks from old equipment flanges that won't stop,' 'difficulty in arranging gaskets for large-diameter tanks,' or 'urgent need for gaskets due to sudden troubles'? The PTFE soft gasket 'Nichias Soft Seal (TOMBO No. 9096 Series)' supports solving on-site challenges with its flexibility and ease of installation. *You can view the detailed content of the column through the related link. For more information, please download the PDF or feel free to contact us.

The spiral wound gasket is a highly reliable gasket that demonstrates excellent sealing performance under high temperature and high pressure conditions. However, to maximize its performance, it is essential to keep several important points in mind from design to handling and installation. Here, we will explain the precautions to prevent unexpected leakage issues. *For detailed content of the column, please refer to the related link. For more information, please download the PDF or feel free to contact us.*