ダイコー Product Lineup

At Daiko Co., Ltd., we handle a variety of "Teflon-based gaskets." The "pure Teflon" is a gasket made from punched Teflon (PTFE). It has excellent chemical resistance and also features outstanding electrical insulation properties. In addition, we offer products such as "Teflon sand," which uses a heat-resistant millboard as the core material and has PTFE as the outer layer, providing excellent elasticity and flexibility, as well as "filled Teflon" and "soft Teflon." 【Features】 < Pure Teflon > ■ Gasket made from punched Teflon (PTFE) ■ Excellent chemical resistance and electrical insulation ■ Operating temperature range: -50 to 100℃ ■ Maximum operating pressure: 1MPa (10kgf/cm²) *For more details, please refer to the PDF document or feel free to contact us.

Daiko's "Insulated Bolt (Sleeve + Washer Type)" The "Insulated Bolt (Sleeve + Washer Type)" is a product that prevents electrical corrosion by electrically insulating the space between flanges and between flanges and bolts/nuts. Using glass-filled epoxy resin board and high-temperature mica laminated board as washers, and employing a PTFE sleeve for bolt protection, it offers high insulation resistance and excellent mechanical strength. Additionally, we also offer the integrated "T9019-Z," which combines an insulating sleeve and insulating washer that can be set on commercially available bolts. 【Features】 <Insulated Bolt (Sleeve + Washer Type)> ■ Excellent electrical resistance and tightening strength ■ Smooth delivery response even for specifications other than standard products ■ Two types of washer materials can be selected based on the usage temperature ■ Excellent light resistance and weather resistance, with very little aging change *For more details, please refer to the PDF document or feel free to contact us.

The Daiko Teflon Cushion Gasket 'D7000' features a Teflon outer layer and uses a joint sheet and heat-resistant milboard as the core material, providing excellent elasticity and flexibility. Thanks to the stable corrosion resistance of Teflon (fluororesin), it can be used with a wide range of corrosive fluids such as acids, alkalis, and organic solvents. Additionally, it has excellent electrical insulation properties and can be used as an insulating gasket for anti-corrosion piping. 【Features】 ■ Excellent chemical resistance ■ Usable over a wide temperature range from low to high temperatures ■ Provides cushioning and high sealing performance compared to pure Teflon ■ Improved creep reduction and stress relaxation at high temperatures compared to pure Teflon, ensuring stable sealing performance *For more details, please refer to the PDF document or feel free to contact us.

The main reason for flange galvanic corrosion is that when different metals come into contact and an electrolyte (such as water or moisture) is present, a battery circuit is formed due to the potential difference, causing the metal with the lower potential to corrode. In particular, galvanic corrosion is likely to occur with combinations of metals that have a large potential difference, such as iron and stainless steel, or iron and aluminum. By inserting insulating materials between the contact points of flanges or between flanges and bolts/nuts, the battery circuit can be interrupted, preventing galvanic corrosion. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.

In a line handling strong acids and strong alkalis, the deterioration and leakage of gaskets occur frequently." "With glass-lined flanges, it is impossible to apply sufficient tightening force, resulting in unstable seals." "Every time maintenance is performed, we struggle to peel off gaskets that have adhered to the flanges." …These are serious sealing issues that arise daily in demanding environments such as chemical plants and pharmaceutical and food factories. To fundamentally solve these challenges, a high-performance sealing material that embodies the philosophy of "the right material in the right place" in its ultimate form is Nichias Corporation's "TOMBO No.9010" (Naflon PTFE cushion gasket), commonly known as the "wrapped gasket." This article will delve into the three significant benefits that this high-performance composite gasket brings to the field, how it can resolve the challenges you face, and provide specific guidelines for selecting the optimal product from a wide range of options, explained thoroughly from a professional perspective. *For detailed content of the column, please refer to the related link. For more information, feel free to download the PDF or contact us directly.

"I can't find the optimal gasket for the glass lining flange." "I want to achieve both high chemical resistance and flexibility that conforms to the distortion of the flange surface." "I heard that No.9010 is good, but the part numbers are too complicated, and I have no idea which one to choose." ... This is a serious issue faced by many site managers seeking high-performance sealing materials. The ultimate customized solution to this problem is Nichias Corporation's "TOMBO No.9010" (Naflon PTFE cushion gasket), commonly known as the "wrapped gasket." In this article, we will thoroughly explain the extremely complex part number system of this high-performance composite gasket, unraveling each one, and provide specific guidelines from a professional perspective to help you select the "suitable item" from countless combinations to address your challenges. *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.

"In a line handling strong acids and strong alkalis, the degradation and leakage of gaskets occur frequently." "With glass-lined flanges, it is impossible to apply clamping force, resulting in unstable seals." "Every time maintenance is performed, we struggle to peel off gaskets that have adhered to the flanges." These are serious sealing issues that arise daily in demanding environments such as chemical plants and pharmaceutical and food factories. To fundamentally solve these challenges, the high-performance sealing material designed with the philosophy of 'the right material in the right place' is the 'fluororesin jacket gasket' from Valkar Co., Ltd. In this article, we will delve into the three significant benefits that this high-performance composite gasket brings to the field, how it can solve the challenges you face, and provide specific guidelines for selecting the right product from a wide range of options, explained thoroughly from a professional perspective. *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.*

"In a line handling highly corrosive chemicals, leaks from flanges are absolutely unacceptable. Flanges with glass lining or resin lining cannot withstand high tightening forces." This presents the most demanding sealing challenge, requiring both advanced chemical resistance and the ability to conform to delicate flange surfaces. One solution to this challenge is the "Fluororesin Jacket Gasket" series from Vulcan Corporation. In this article, we will thoroughly explain why this high-performance composite gasket is trusted in many chemical plants, covering its basic structure, the differences among the four main core materials (N, S, H, F types) that determine its performance, and the essential precautions that must be followed for safe use, all from a professional perspective. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us directly.*

In a line handling highly corrosive chemicals, leaks from flanges are absolutely unacceptable. With flanges that are glass-lined or resin-lined, high tightening force cannot be applied. These are the most demanding sealing challenges that require both advanced chemical resistance and the ability to conform to delicate flange surfaces. One solution to this difficult problem is the 'Fluororesin Jacket Gasket' series from Vulcan Corporation. In this article, we will thoroughly explain why this high-performance composite gasket is trusted in many chemical plants, covering its basic structure, the differences among the four main core materials (N, S, H, F types) that determine its performance, and the essential precautions that must be followed for safe use, all from a professional perspective. *For detailed content of the column, please refer to the related links. For more information, please download the PDF or feel free to contact us.

"A pure PTFE gasket is concerning due to significant deformation (creep) caused by heat. I want to choose a reliable gasket with balanced performance for a line handling various chemicals." ...In response to the needs of environments where both chemical resistance and mechanical stability are required, the standard model of filled fluoropolymer gaskets is "Valkar No. 7020" (Valkalon Gasket) from Valkar Co., Ltd. This article will thoroughly explain why No. 7020 is commonly chosen in many chemical lines, from its structural secrets to specific data supporting its performance, as well as the correct knowledge for safe use, from a professional perspective. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.

In plant and building piping systems, "corrosion" is the greatest risk factor that shortens the lifespan of equipment and can lead to serious accidents. Among these, "galvanic corrosion" (dissimilar metal contact corrosion) that occurs when different metals are connected progresses rapidly and is a phenomenon for which countermeasures are essential. The standard method to prevent this galvanic corrosion is the use of "insulation kits" (insulation bolts and gaskets). Among these, the "insulation lining bolt," which has the bolt shaft coated with fluororesin, is particularly excellent in terms of workability and reliability, and can resolve installation issues on-site (such as interference with gaskets). This article will thoroughly explain the mechanism of why "galvanic corrosion" occurs, why insulation lining bolts are supported on-site, their structural advantages and specifications, and the appropriate selection methods tailored to on-site standards. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.