ダイコー Product Lineup

Overview of Processing Example Product Name: Flange Gasket for High-Temperature Ducts Dimensions: Equivalent to JIS 10K-80A (Thickness 4mm) This example involves the processing of a gasket for duct flanges used in high-temperature exhaust equipment. Dimensional accuracy and positional reproducibility during installation were required for the circular shape, which includes bolt holes. By adopting laser processing without molds for products related to piping and equipment, we enable shape modifications and small lot production while ensuring stable processing quality. Product Features (D5800RCF) Exhaust gases, combustion gases, hot air, etc., for duct flanges and manhole gaskets. Uses biocompatible, biodegradable fiber cloth that complies with RCF regulations. Various processing methods, including sewing, are available, allowing for large-diameter processing. Used for high-temperature duct seals.

• others

Processing Case Overview Product Name: Glass Cloth Gasket Dimensions: φ155 × φ90 (PCD130, 15φ-4) This case involves the processing of a circular gasket made from glass cloth material (3.2t with tape). In addition to outer and inner diameter processing, it includes bolt holes specified by PCD, and was manufactured for sealing applications in industrial equipment flanges. To maintain the unique layered structure of the fiber material, water jet processing, which allows for non-contact machining, was adopted, achieving both dimensional accuracy and reproducibility. Product Features (Glass Cloth) 〇D5400 This gasket is made by applying natural rubber to glass cloth and molding it into a specified shape. It has excellent thermal insulation properties and is environmentally friendly as it is non-asbestos. There are various processing methods, including sewing, allowing for large diameter processing. It is used for high-temperature duct sealing.

• others

■Overview of Processing Example Product Name: NBR Rubber Sheet with Slits Dimensions: t1 × 20W × 71L (φ4-2) This processing example involves the production of a rubber component with slits, used for parts in industrial equipment. In addition to the long shape, multiple holes and slit processing were specified, requiring positional adjustability and dimensional reproducibility during installation. The client is an industrial equipment manufacturer. To ensure freedom of shape and processing accuracy without using a die, water jet processing was adopted, achieving stable quality in production.

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■Overview of Processing Example Product Name: Clutch Cover Gasket Dimensions: 1.5t × φ355 × φ322 (with P350 holes) This processing example involves the production of a gasket for a clutch cover using D6000 (1.5t). In addition to the outer and inner diameters, the inclusion of P350 bolt holes required simultaneous precision in hole positioning and shape. In this application, "compliance of the joint surface" and "ease of alignment during assembly" are crucial as they directly relate to oil sealing performance. Therefore, the drawing shape was converted into processing data, and the outer circumference, inner circumference, and hole drilling were all processed together using water jet cutting. By processing without affecting the material with heat, the reproducibility of the shape and the quality of the end face are stabilized. As a result, conditions that facilitate alignment during assembly and ensure stable finishing of the sealing surface have been secured. Furthermore, the adoption of D6000 contributes to both practicality and cost advantages for oil seal applications.

• others

■Overview of Processing Example Product Name: Glass Cloth Gasket Dimensions: 4.8t × 140W × 180L Uneven Frame This example is a glass cloth gasket manufactured for flange parts of equipment. The design includes an uneven frame shape and specified inner and outer radii, with an emphasis on assembly compatibility and shape reproducibility. Water jet processing is used to minimize the processing difficulty inherent to fiber materials while achieving stable dimensional accuracy and finish.

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■Overview of Processing Example Dimensions: 150W × 712L (Thickness 2t) This example involves the production of a long gasket processed with tape using D5400 glass cloth material. It features a strip shape of 150W × 712L with six 14φ holes arranged to improve positioning during installation and enhance work efficiency. In long shapes, linear accuracy and hole pitch accuracy are crucial, so water jet processing was adopted. This method allows for processing without thermal impact, ensuring a uniform cutting surface without compromising material properties. The tape-equipped specification facilitates temporary fixing, contributing to improved workability on-site. ■Product Features (D5400) This gasket is made by applying natural rubber to glass cloth and molding it into a specified shape. It has excellent thermal insulation properties and is environmentally friendly as it is non-asbestos. Various processing methods, including sewing, are available, allowing for large diameter processing. It is used for high-temperature duct sealing.

• others

Processing Case Overview Product Name: Glass Cloth Gasket Dimensions: φ526 × φ450 (PCD496) This case is an example of processing a large-diameter glass cloth gasket used in electric furnace-related equipment. We adopted water jet processing without using a mold to meet specifications that require circumferential accuracy and hole position accuracy. While utilizing the material properties designed for use in high-temperature environments, we ensure stable dimensional reproducibility and assembly compatibility. Product Features (Glass Cloth) 〇D5400 This is a gasket made by applying natural rubber to glass cloth and molding it into a specified shape. It has excellent thermal insulation properties and is environmentally friendly as it is non-asbestos. There are processing methods such as sewing, allowing for large-diameter processing. It is also used in high-temperature duct sealing applications.

• others

Processing Case Overview Product Name: Ring Gasket (R5 U-shaped Cut) Dimensions: φ460×φ361 (t6.4) This processing case involves a large-diameter ring gasket used in wind power-related equipment. Due to its special shape, which includes R5 U-shaped notches and jigsaw cuts, water jet processing was adopted instead of mold processing. By using non-contact cutting, stable processing accuracy is ensured even for the thick D5400, leading to improved fit during assembly and enhanced workability. Product Features (D5400) This gasket is made by applying natural rubber to glass cloth and molding it into the specified shape. It has excellent thermal insulation properties and is environmentally friendly as it is non-asbestos. Various processing methods, including sewing, are available, allowing for large-diameter processing. It is used for high-temperature duct sealing.

• others

We would like to introduce a case where we manufactured a gasket for a screw pump gear case using the expansion graphite joint sheet "TOMBO No.1120" with a thickness of 0.5mm, based on the drawings received from the customer. The size is 220mm x 384mm, and the processing details include precisely creating 14 bolt holes with a diameter of 14mm and 2 main port holes with a diameter of 130mm. Using our plotter processing machine, we accurately cut the very thin and delicate material without damaging it, following the CAD data. 【Processing Features】 ■ No die required, can handle from one piece ■ Precise cutting of thin materials ■ Easy repeat orders with data storage *For more details, please download the PDF or feel free to contact us.

• Sealing

As a measure against oil leaks in hydraulic equipment and transformers, we proudly present the "Three Sheet Packing (Viscous Body Impregnated Sheet Gasket)" that boasts immense trust. This special gasket manufactured by ThreeBond is a groundbreaking material that combines the "ease of handling of solid sheets" with the "sealability of liquid gaskets." In this article, Daiko Co., Ltd. will explain the mechanism of the Three Sheet, the differentiation of the four types according to surface pressure (H type, S type, T type, F type), and detailed selection criteria. *For more 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.*

• Sealing

When it comes to gaskets with the strongest class of heat resistance and chemical resistance, fluororubber (FKM) is the common knowledge in many workplaces. However, even fluororubber has environments that can be a 'critical point' where it can deteriorate in a short period. These are the lines of 'steam (water vapor)' and 'strong alkali.' In this article, we will explain the special grade 'IF-900-AF (Aflas/FEPM)' produced by Iruma River Rubber, which overcomes the weaknesses of conventional fluororubber and achieves long life in harsh steam and chemical lines. *For detailed content of the column, please refer to the related link. For more information, feel free to download the PDF or contact us.

• Rubber

"Nylon (polyamide)" is widely used as an engineering plastic with excellent wear resistance and heat resistance, ranging from automotive parts to everyday goods. However, are you able to accurately understand and select the differences between the representative grades "Nylon 6 (PA6)" and "Nylon 66 (PA66)"? In this article, we will explain the two decisive differences (heat resistance, water absorption, impact strength) as well as "plant-based Nylon 11" and "low water-absorbing Nylon 12," which have recently gained attention as 3D printer materials. *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.

• Engineering Plastics

In the world of industrial gaskets, the essential material for handling "heat" and "electricity" is "copper." However, there are two main grades of copper gaskets: "C1100 (tough pitch copper)" and "C1220 (phosphorus deoxidized copper)," and choosing the wrong one can lead to issues such as "cracking at the weld" and "not achieving the expected conductivity." In this article, Daiko Co., Ltd., a specialized manufacturer of industrial gaskets, explains the differences between these two copper grades and the importance of "annealing (softening treatment)" that dramatically enhances the sealing performance of copper gaskets. *For more detailed information, please refer to the related links. For further inquiries, feel free to download the PDF or contact us.*

• Other metal materials

When selecting plastic materials, have you ever faced the challenge of wanting "transparency to see the contents, but being afraid of breakage with glass or acrylic"? The optimal solution for this is polycarbonate (PC). In this article, we will explain polycarbonate, which boasts top-class impact resistance among engineering plastics, along with its incredible strength, advantages and disadvantages, and points to consider during processing. *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.*

• plastic

In piping work, fittings that are always installed with future maintenance in mind are called "unions." Unlike regular fittings that "cannot be removed without cutting once connected," unions have the significant advantage of being "removable at any time." In this article, we will explain the mechanism of unions, the correct installation methods, and the importance of "gaskets" and "seal tape" in preventing leaks. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.

• Pipe Fittings

There are many types of plastic materials, but nothing surpasses "polyvinyl chloride (PVC)" in terms of the balance between cost and performance. From water pipes to industrial tanks, and even construction materials. Why is PVC still chosen so consistently? We will explain five technical features that are supported in design and construction sites. *For more details on the column, you can view it through the related link. For more information, please download the PDF or feel free to contact us.*

• plastic

In the design of industrial machinery and analytical devices, selecting materials for "covers" and "windows" that ensure internal visibility is important. Glass poses a risk of breaking and is too heavy, while polycarbonate is not cost-effective. In such cases, "acrylic resin (PMMA)" becomes a balanced option. This time, we will introduce three technical features that make acrylic suitable for industrial equipment, as well as precision processing services provided by Daiko Co., Ltd. *For more details on the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

• Other polymer materials

SUS304 is so widely used, from everyday items to industrial equipment, that it is often referred to as "the representative of stainless steel." From household items like spoons and forks to building exteriors and piping in chemical plants, why is SUS304 continuously chosen? The reason is simply that "the balance between performance and cost is extremely good." In this article, we will explain the "three strengths" of SUS304 and the decisive differences between it and the higher-grade SUS316. *For more detailed information, please refer to the related links. You can download the PDF for more details or feel free to contact us.*

• stainless

"The gasket removed during maintenance is undamaged, so can't we reuse it?" "I want to reuse a packing that has been used once to reduce costs." This is a common concern on site, but to put it simply, reusing gaskets is absolutely not allowed. Major manufacturers also stipulate that "gaskets are disposable (one-way) parts" as a principle. Why is it not permissible to reuse them even if they look clean? In addition to the physical mechanisms that can cause leaks due to reuse, I will also explain the risks of "asbestos" lurking in old equipment. *For more details on the column, you can view it through the related link. For more information, please feel free to download the PDF or contact us.*

• Sealing

In factory equipment management and product traceability, there is currently a shift away from "labels" and "ink printing." The background to this is the wave of digitalization (DX) and the need to respond to harsh on-site environments. Considering the trends in the industrial sector and the challenges on the ground, we propose a new management method utilizing the advanced device "Keyence MD-U1000C" introduced by Daiko Co., Ltd. *For more details on the column, you can view it through the related link. For more information, please download the PDF or feel free to contact us.*

• Laser marker

Oil leaked from the gaps in the machine, causing the line to stop." "The adjustment screw of the precision equipment became loose, leading to unstable quality." When we delve into the causes of these serious troubles, we often find that they can be traced back to a single faulty "O-ring." O-rings are extremely important mechanical components that govern the "sealing (leak prevention)" and "operability (sliding resistance)" of various machines, ranging from the aerospace industry to semiconductor manufacturing equipment and even everyday gas appliances. Despite their simple circular shape, O-rings are designed based on advanced material chemistry and physical laws. Choosing the wrong material can lead to a loss of function in an instant, potentially putting the entire expensive equipment at risk. This article will explain the true importance of the O-ring as a component and the essential rules for "material selection" to protect machinery. *For more details, please refer to the related links. You can download the PDF for more information or feel free to contact us.

• Sealing

In the field of mechanical design and maintenance, the selection of "dimensional standards" for O-rings is unavoidable. We will systematically explain the meanings and applications of various symbols, including JIS standards (P, G, V), AS568, and ISO standards. *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.

• Sealing

"I want to reduce the particles (micro-particles) in the chemical solution to the absolute minimum." "I want to shorten the piping cleaning (flushing) time and speed up the startup." "Since we use harsh chemical solutions, we need high durability." In the fields of semiconductor and LCD manufacturing, where nano-level precision processing is required, the specifications demanded for piping tubes are becoming increasingly stringent each year. The "TOMBO No.9003-PFA-HG Naflon PFA-HG tube" from Nichias meets these advanced requirements that are difficult to achieve with standard PFA tubes. We will unravel why it is labeled "HG (High Grade)" and its overwhelming specifications. *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.*

• tube

From semiconductor manufacturing equipment to chemical plants and electrical insulation applications. As a reliable piping material in harsh environments, the "TOMBO No.9003 Naflon PTFE Tube" has been chosen for many years. In the latest semiconductor processes, ultra-high-performance grades like "PFA-UG" have also emerged, but for general industrial applications, the balance of cost and performance is still best with this "PTFE Tube." We will thoroughly explain its specifications and reasons for being chosen. *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.*

• tube

"I want to visually confirm whether liquid is flowing through the pipes." "Since there is a gap between the devices, I want to connect them with a single long tube." When selecting a fluoropolymer tube, the solution to these challenges is the "TOMBO No.9003-PFA Naflon PFA Tube." This high-performance tube possesses incredible chemical resistance and heat resistance comparable to PTFE, while also featuring "translucency" and "continuous molding capability (lengthening)" that PTFE does not have. I will explain its capabilities and applications. *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.*

• tube

"The rubber melts due to heat," "the cross-section gets charred and hardens," "the material is too large to fit in the machine." In the processing of industrial gaskets and seals, the game-changer that solves these issues all at once is "water jet processing." However, while the technology itself is known, the extent to which it can handle materials of various thicknesses and scales varies greatly from one processing company to another. In this article, we will explain the "core" of the water jet technology and the "overwhelming equipment capability" of Daiko Co., Ltd. that maximizes its potential. *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.*

• Sealing

In this document, we thoroughly analyze the core "structure" and "features" of D1000, explaining why it can withstand harsh environments, while comparing it with other types of gaskets. We provide detailed explanations using diagrams and images regarding the robust sealing mechanism, its decisive role, and the special configurations of the product. This is a valuable reference, so please take the time to read it. 【Contents】 ■ Areas that exceed the limits of joint sheets ■ Features of the spiral gasket D1000 ■ The core of D1000 - The robust sealing mechanism created by the "spiral" structure ■ The decisive role of the "inner and outer rings" in maximizing performance ■ The diverse product configurations and special adaptations of D1000 ■ For complex insulation design and product selection, consult the experts at "Daiko" *For more details, please download the PDF or feel free to contact us.

• Processing Contract
• Sealing

We would like to introduce a processing case where 22 seals were produced from 3mm thick neoprene sponge (Neo-spot) in the size of 148mm × 478mm. Neoprene sponge is a well-balanced rubber sponge material with excellent weather resistance, heat resistance, flame retardancy, and oil resistance. Its closed-cell structure makes it difficult for air and water to pass through, maintaining high airtightness and water resistance. The processing details include four bolt holes with a diameter of 10mm and R30 curved processing on the inner diameter corners. Using our water jet cutting machine, we precisely cut the soft sponge material with sharp edges according to the CAD data without crushing it. 【Case Overview】 ■ Material: Neoprene Sponge 3t ■ Size: 148mm × 478mm ■ Quantity: 22 pieces *For more details, please download the PDF or feel free to contact us.

• Processing Contract
• Food and pharmaceutical standard seals and packing products

This is a case study of manufacturing block-shaped gaskets measuring 60mm × 95mm from 20mm thick CR rubber (chloroprene rubber). CR rubber is a rubber material that possesses a balanced combination of high weather resistance, heat resistance, oil resistance, and chemical resistance. Compared to other general-purpose rubbers, it has a low flammability characteristic (flame retardant). The processing details include counterboring to sink the heads of bolts and C10 chamfering around the entire product. Using our plotter processing machine (with router function), we minimized the distortion typical of thick rubber and achieved a sharp finish. [Case Overview] ■ Material: CR Rubber 20t ■ Size: 60mm × 95Lmm ■ Processing Details: Counterboring, C10 chamfering around the entire perimeter *For more details, please download the PDF or feel free to contact us.

• Rubber
• Rubber bands and strings
• Processing Contract

This is an example of producing a framed irregularly shaped gasket measuring 210mm x 355mm from the special sheet gasket "Three Sheet 201S" (thickness 0.1mm) manufactured by Three Bond Co., Ltd. The Three Sheet packing is a special gasket that combines the advantages of both solid sheet gaskets and liquid gaskets. It is impregnated with a unique viscous material in long and strong fibrous materials, providing flexibility and excellent conformity to flange surfaces. The processing includes cutting the outer circumference and applying an R65 curve to the inner diameter. Using our plotter processing machine, we precisely cut the material according to the CAD data without damaging it. 【Case Overview】 ■ Material: Three Sheet 201S (0.1t) ■ Size: 210mm x 355mm ■ Processing Details: Outer circumference cut, R65 curve processing on the inner diameter *For more details, please download the PDF or feel free to contact us.

• Sealing

We would like to introduce a processing example of producing mats and partitioning materials measuring 440mm × 1800mm from flexible polyvinyl chloride resin (2mm thick) that excels in flexibility and transparency. Flexible transparent PVC is a type of polyvinyl chloride resin that has been made flexible by adding plasticizers, combining high transparency and toughness. It is stable against acids, alkalis, and fats, making it resistant to degradation even in factory environments. The processing details include eight small diameter holes of φ3mm and specified slit processing. Using our plotter processing machine, we achieved high-precision cuts directly from CAD data without moving the material. 【Case Overview】 ■ Material: Flexible transparent PVC 2mm ■ Size: 440mm × 1800mm ■ Processing Details: Eight φ3mm small diameter holes, slit processing *For more details, please download the PDF or feel free to contact us.

• Processing Contract

In the field of plant maintenance, issues with steam line leaks are never-ending. Many of these problems stem from a "selection mistake" where "joint sheets for general piping (water and oil)" were carelessly used in steam piping. "I thought it would be fine because the catalog said it was heat-resistant up to 150°C." This complacency can be fatal. There are clear physical reasons why only "steam-specific" materials should be used for steam piping. This article will explain the mechanism of "thermal degradation (hardening)" that occurs when the wrong gasket is used, as well as the risks of "re-tightening," which should absolutely be avoided, based on technical materials from Nichias. *For detailed content of the column, please refer to the related links. For more information, you can download the PDF or feel free to contact us.

• Sealing

"Even after tightening, it keeps dripping from the gap between the flange and the gasket." "When I reused old piping, even though I put in a new packing, it won't stop." "There is rust and scratches on the flange surface, but there is no budget for replacement." The most frequently encountered trouble in piping maintenance is "Interface Leakage." Unlike "permeation leakage," which passes through the material of the gasket itself, this phenomenon occurs when fluid escapes through the "gap" between the gasket and the flange surface. The key to stopping interface leakage is "familiarity." In this article, we will explain why interface leakage occurs and how to approach rough flanges to stop the leakage. *For more detailed content of the column, please refer to the related link. For more information, feel free to download the PDF or contact us.

• Sealing

Have you ever been troubled by such inexplicable minor leaks at the piping site? It may not be "interface leakage" that leaks from the gap between the gasket and the flange, but rather "permeation leakage," which leaks through the material of the gasket itself. In particular, when using "sheet gaskets" such as joint sheets, the risk of this permeation leakage is always present. The most effective countermeasure for this is to "make the gasket thinner." In this article, we will explain the often-overlooked mechanism of "permeation leakage" and the physical reasons why thick gaskets can lead to leaks. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

• Sealing

"A leak occurred from a flange that was supposed to be tightened to the specified torque a few months later." "After performing a re-tightening (hot bolting), the gasket was damaged." Such troubles are not uncommon in the maintenance of plants and piping systems. The main cause cited is the physical phenomenon specific to gaskets known as "stress relaxation." This article will explain the mechanism of stress relaxation, the differences in behavior depending on the material, and appropriate management methods to maintain long-term sealing performance. *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.*

• Sealing

The "sheet gasket," which is the most familiar sealing material on site, is widely used due to its convenience of being processed with scissors or cutters, such as joint sheets and fluororesin sheets. However, when it comes to its "thickness," are you not deciding it based on a vague feeling? In fact, the belief that "thicker is stronger and safer" for sheet gaskets is a significant misconception. On the contrary, it is not uncommon for overly thick selections of sheet gaskets to cause critical leakage problems precisely because they are sheet gaskets. In this article, we will thoroughly explain why "thin" is recommended for sheet gaskets, as well as the situations where "thick" is necessary, and the criteria for selection. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.*

• Sealing
• Rubber
• Rubber bands and strings

In the manufacturing fields of food, pharmaceuticals, and cosmetics, achieving a balance between "safety (compliance with the Food Sanitation Act)" and "durability (heat and chemical resistance)" is an eternal challenge. While silicone rubber and EPDM are safe and easy to use, they may not withstand high-temperature oils, certain chemicals, or high-pressure steam. This is where "Food Sanitation Act-compliant fluorine rubber IF-900," proudly offered by Iruma River Rubber Co., Ltd., comes into play. IF-900 is a high-grade product that maintains the inherent heat and oil resistance of fluorine rubber while complying with the Food Sanitation Act (Ministry of Health and Welfare Notification No. 370). In this article, we will provide a detailed explanation of the physical properties and resistance data of IF-900 based on the manufacturer's official catalog. We will also introduce our processing solutions at Daiko Co., Ltd. to procure this expensive material in the necessary shapes and quantities without waste. *For more detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us directly.*

• Food and pharmaceutical standard seals and packing products
• Rubber
• Rubber bands and strings

In the manufacturing environment of products that enter the human mouth, such as food, beverages, pharmaceuticals, and cosmetics, the safety of "rubber packings" and "gaskets" used in equipment is as important, if not more so, than the safety of the products themselves. If harmful substances were to leach from the rubber and contaminate the products, the trust in the company would collapse instantly. Not an ambiguous "food grade," but truly safe silicone rubber based on "solid evidence" from a public testing organization. That is the "Silicone Rubber Sheet SN-50" from Osaka Rubber Co., Ltd. In this article, we will thoroughly explain why SN-50 has gained absolute trust in the food and medical fields, based on the test report (No. 452-21-A-0055) issued by the Chemical Substance Evaluation and Research Institute (CERI), detailing its legal basis and test results. *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.

• Food and pharmaceutical standard seals and packing products
• Rubber
• Rubber bands and strings

In manufacturing environments where "hygiene management" is the top priority, such as in food, beverages, pharmaceuticals, and cosmetics, the selection of rubber components (gaskets, seals) used is extremely important. This is because it is not only about preventing leaks but also about ensuring safety for the human body (compliance with regulations) and significantly reducing the risk of foreign material contamination. A suitable solution to meet such stringent requirements is the "EP-5165-W" developed by Iruma River Rubber Co., Ltd. This is a special grade of white (white) EPDM (ethylene propylene rubber) that is compliant with food hygiene laws and excels in weather resistance and chemical resistance. In this article, we will thoroughly explain why EP-5165-W continues to be chosen in hygiene management settings from the perspectives of "legal compliance," "color advantages," and "basic performance," and we will introduce our solutions at Daiko Co., Ltd., which process and supply this safe material tailored to the shape of our customers' equipment, starting from just one piece. *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.

• Food and pharmaceutical standard seals and packing products
• Rubber
• Rubber bands and strings

The challenges of "cutting processing" in manufacturing sites always lie in balancing "cost," "delivery time," and "accuracy." While dedicated mold presses offer high precision, they come with high initial costs and long lead times. On the other hand, hand cutting and cutting plotters have no initial costs, but they tend to have longer takt times during mass production, resulting in higher unit prices. A suitable solution to this dilemma is the long-established technique known as "Thompson processing (die cutting)." This article will thoroughly explain the basics of Thompson processing, why Daiko is committed to "in-house mold production," its technical advantages, and its ability to handle a wide variety of materials such as joint sheets, rubber, sponge, and PTFE. *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.

• Processing Contract

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.

• bolt

In selecting waterproof sealants, cushioning materials, and packing materials, there are surprisingly few materials that meet the three elements of "water-stopping ability," "flame resistance," and "weather resistance" at a high level. The reality is that common sponges often have trade-offs, such as "stops water but is flammable" or "flame-resistant but has weak weather resistance." In response to these challenges, the chloroprene rubber (CR) sponge "Gum Sponge C-4305," manufactured by Inoac Corporation, has been chosen as a standard in the industry for many years. In this article, based on the manufacturer's official technical documentation and product characteristics, we will thoroughly explain why C-4305 has gained such trust from many engineers and designers who say, "You can rely on C-4305 for now." We will delve into the secrets of its core performance, including its "closed-cell structure" and "flame-retardant CR formulation," specific applications, and the "processing technology" that allows this material to be shaped flexibly to meet on-site needs. *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.*

• Rubber
• Rubber bands and strings
• sponge

We would like to introduce a case study where we produced 20 pieces of insulation and vibration-damping sheets for water level gauges using the heat-resistant "TOMBO No.6750-S (Vermosal Sheet-S)." "TOMBO No.6750-S" is a non-asbestos heat-resistant sheet made primarily from inorganic minerals and formed through a papermaking process. Compared to conventional asbestos sheets, it has a thermal conductivity that is approximately 30% lower, demonstrating excellent heat retention and insulation effects. The size is 34mm × 340mm (equivalent to 9B size). Using our plotter processing machine, we cut the sheets directly from CAD data to precise dimensions without the need for a die. 【Case Overview】 ■ Material: TOMBO No.6750-S 1.5t ■ Size: 34mm × 340mm (equivalent to 9B size) ■ Quantity: 20 pieces *For more details, please download the PDF or feel free to contact us.

• Processing Contract

This is a case of producing 500 ring gaskets with an outer diameter of φ55mm and an inner diameter of φ43mm from the gasket sheet "TOMBO No.9007-SC," which is compatible with strong alkaline fluids. "TOMBO No.9007-SC" is a special gasket sheet made by blending carbon with PTFE (fluororesin). It exhibits excellent corrosion resistance against strong alkaline fluids such as sodium hydroxide and potassium hydroxide. Using our plotter processing machine, we were able to respond quickly to the production of 500 medium-lot items directly from CAD data without the need to create a die. [Case Overview] ■ Material: TOMBO No.9007-SC 1.5t ■ Size: Outer diameter φ55mm × Inner diameter φ43mm ■ Quantity: 500 pieces *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a case where a gas seal material with an outer diameter of φ2270mm was produced from laminated boards made by bonding board-shaped insulation materials "TOMBO No.5625" and "TOMBO No.5615." The Fineflex BIO board is a high-temperature insulation material formed into a board shape by adding inorganic and organic binders to biodegradable fibers. It is not subject to RCF regulations and is designed with consideration for the environment and safety. Due to the size exceeding the standard dimensions of the material, it was precisely cut into a four-part shape using our water jet cutting machine. By using CAD data for cutting, the split surfaces fit perfectly together, allowing for installation without gaps. [Case Overview] ■ Material: Bonded BIO board (50t) ■ Size: Outer diameter φ2270mm, four-part processed product *For more details, please download the PDF or feel free to contact us.

• Sealing
• Processing Contract