ダイコー List of Products and Services

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.*

• Other machine elements

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.*

• Other machine elements

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.

• Other machine elements

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.*

• Other machine elements

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.*

• Other machine elements

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.

• Other machine elements

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.*

• Other machine elements

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.

• Other machine elements

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.

• Other machine elements

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.*

• Other machine elements

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.

• Other machine elements

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.*

• Other machine elements

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.*

• Other machine elements

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.*

• Other machine elements

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.

• Other machine elements

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.*

• Other machine elements

We would like to introduce the 'TOMBO No.9007LC' that we handle. This product was developed to prevent the creep phenomenon, which is a weakness of PTFE. It has a usage temperature range of -100℃ to 200℃ and a maximum operating pressure of 3MPa (30K). Please feel free to contact us when you need assistance. 【Features】 ■ Developed to prevent the creep phenomenon, which is a weakness of PTFE ■ Excellent heat resistance *For more details, please download the PDF or feel free to contact us.

• Sealing

We would like to introduce our "Transparent and Two-Color Gauge Glass" that we handle. Using our own processing equipment and abundant inventory, we can accommodate orders for just the packing or changes in the type of packing. Please feel free to consult us regarding materials. 【Lineup (partial)】 ■No.0/90mm ■No.1/115mm ■No.2/140mm ■No.3/165mm ■No.4/190mm ■No.5/220mm *For more details, please download the PDF or feel free to contact us.

• Other measurement, recording and measuring instruments
• Glass

We would like to introduce the "Reflective Gauge Glass" that we handle. Using our own processing equipment and abundant inventory, we also accept orders for just the packing or changes in the type of packing. Please feel free to consult us regarding materials. 【Lineup (partial)】 ■No.0/90mm ■No.1/115mm ■No.2/140mm ■No.3/165mm ■No.4/190mm ■No.5/220mm *For more details, please download the PDF or feel free to contact us.

• Other measurement, recording and measuring instruments
• Glass

The "Omron BS-1" is an electrode holder component for checking the water level in a tank. It can be used for applications involving wastewater, saltwater, acidic solutions, high temperatures, and high pressures. Please feel free to contact us when you need assistance. 【Specifications】 ■ Operating temperature: 250℃ ■ Operating pressure: 1.96MPa *For more details, please download the PDF or feel free to contact us.

• Other measurement, recording and measuring instruments

We would like to introduce our "Eagle Mark Boiler Paint." By applying it to equipment such as boilers and pressure vessels, it forms a strong coating that serves as an insulating layer and exhibits corrosion prevention and rust-proofing effects. We also handle thinners. Please feel free to contact us. 【Features】 ■ Forms a strong coating that acts as an insulating layer ■ Prevents the progression of corrosion ■ Exhibits corrosion and rust-proofing effects *For more details, please download the PDF or feel free to contact us.

• paint
• boiler

We would like to introduce the "Magnesium Anode" that we handle. Through electrochemical action, it prevents corrosion of the hot water tank body. Magnesium dissolves in the hot water and protects the water contact area of the tank body. Please feel free to contact us when you need assistance. 【Other Related Component Lineup】 ■ Copper Gaskets / Metal Gaskets ■ Silicone Rubber Manhole Gaskets ■ Paste ■ Boiler Paint ■ Omron BS-1 *For more details, please download the PDF or feel free to contact us.

• Other metal materials

We would like to introduce the "Gasket Paste" that we handle. It is a sealing auxiliary agent used to enhance the sealing properties of gaskets and to prevent seizing. Please feel free to contact us when you need it. 【Other Related Component Lineup】 ■ Copper Gaskets / Metal Gaskets ■ Silicone Rubber Manhole Gaskets ■ Magnesium Anodes ■ Boiler Paint ■ Omron BS-1 *For more details, please download the PDF or feel free to contact us.

• Sealing
• Coating Agent

We would like to introduce our "Silicone Rubber Manhole Packing." It is designed for pressure vessels and is made of a flexible material, allowing for smooth installation. Please feel free to contact us when you need assistance. 【Specifications】 ■Dimensions: t10 φ360×φ330 *For more details, please download the PDF or feel free to contact us.

• Sealing

We would like to introduce the "copper packing and metal packing" that we handle. Metals are generally perceived as hard materials, but they are often used as sealing materials as well. The reason for their wide industrial use lies in the good balance between strength and ease of processing. Please feel free to contact us when you need assistance. 【Other related component lineup】 ■ Silicone rubber manhole packing ■ Paste ■ Magnesium anode ■ Boiler paint ■ Omron BS-1 *For more details, please download the PDF or feel free to contact us.

• Sealing

The "Vulcan Spiral Wound Gasket" is a product that maintains stable sealing performance over a wide range. Even under harsh conditions such as thermal cycles and pressure cycles, it suppresses leakage and damage. Its low adhesion to flanges makes cleaning easy, and replacement work can be carried out smoothly. Please feel free to contact us when needed. 【Features】 ■ Withstands high temperature and high pressure conditions, maintaining excellent sealing performance even with sudden changes in usage conditions. ■ Easy to clean due to low adhesion to flanges. ■ Allows for smooth gasket replacement work. *For more details, please download the PDF or feel free to contact us.

• Sealing

The "Nichias Vortex Gasket" is a type of semi-metallic gasket commonly referred to as a spiral-shaped gasket. Due to its unique structure, it can be used under high temperature and high pressure conditions similar to metal gaskets. It exhibits excellent sealing performance and is adopted in a wide range of piping and equipment. Please feel free to contact us when you need assistance. 【Features】 ■ Alternately laminated metal thin strips (hoops) with a V-shaped cross-section and non-metallic cushioning material (filler) ■ The beginning and end of the coil are firmly fixed with welding ■ Four types of shapes tailored to the gasket seat of the corresponding flange *For more details, please download the PDF or feel free to contact us.

• Sealing

"Glass-filled PTFE" is a standard PTFE gasket that contains glass fiber as a filler material. Compared to regular PTFE, it can be used at high temperatures. It can improve wear resistance while maintaining a low friction coefficient. Additionally, it can be used as an electrical insulating material. 【Features】 ■ Contains glass fiber as a filler material ■ Can be used at high temperatures compared to regular PTFE ■ Improves wear resistance while maintaining a low friction coefficient ■ Usable as an electrical insulating material *For more details, please download the PDF or feel free to contact us.

• Sealing

"Filled PTFE" is a product developed to suppress the creep phenomenon, which is a weakness of PTFE. By incorporating inorganic fillers, heat resistance is improved. It demonstrates its performance in various chemical piping applications, leveraging its superior heat resistance compared to standard PTFE. Please feel free to contact us when you need assistance. 【Features】 ■ Suppresses the creep phenomenon, which is a weakness of PTFE ■ Incorporates inorganic fillers to enhance heat resistance ■ Superior heat resistance compared to standard PTFE *For more details, please download the PDF or feel free to contact us.

• Sealing

The "PTFE Cushion" is a product that features a PTFE outer layer and uses a joint sheet or heat-resistant millboard with excellent elasticity and flexibility as the core material. It combines the chemical resistance of PTFE with the sealing properties of sheet gaskets. Additionally, there is a type that is shaped like a U to prevent liquid accumulation. Please feel free to contact us when you need assistance. 【Features】 ■ PTFE outer layer ■ Core material made of joint sheet or heat-resistant millboard with elasticity and flexibility ■ Combines the chemical resistance of PTFE with the sealing properties of sheet gaskets ■ Available in a U-shaped design to prevent liquid accumulation *For more details, please download the PDF or feel free to contact us.

• Sealing

This product is a gasket material made from punched PTFE. It has excellent chemical resistance and also offers superior electrical insulation. However, there is a possibility of creep phenomena occurring in high-temperature environments. Please be aware that the material may undergo plastic deformation and elongation, which can lead to bolt loosening. 【Features】 ■ Punched PTFE ■ Excellent chemical resistance ■ Superior electrical insulation *For more details, please download the PDF or feel free to contact us.

• Sealing

The "SGM Gasket" is a 100% PTFE gasket for process piping and equipment flanges that excels in chemical resistance and heat resistance, combining strength and flexibility. Made from high-strength expanded PTFE, this fluororesin gasket is soft and has excellent conformability, allowing it to easily seal even on slightly uneven surfaces, and it can also be used as an insulating gasket. Please feel free to contact us when you need assistance. 【Features】 ■ Excellent chemical resistance and heat resistance ■ Combines strength and flexibility ■ 100% PTFE ■ Made from high-strength expanded PTFE ■ Soft and has excellent conformability, easily sealing on slightly uneven surfaces ■ Usable as an insulating gasket *For more details, please download the PDF or feel free to contact us.

• Sealing

"TOMBO No.9096" is a soft PTFE-based gasket that offers excellent chemical resistance and insulation properties, along with heat resistance and flexibility. This product significantly improves the original sealing performance. It has very high flexibility and greatly enhances heat resistance compared to standard PTFE gaskets. Please feel free to contact us when you need assistance. 【Features】 ■ Very soft ■ Easy to install on complex sealing surfaces with adhesive tape *For more details, please download the PDF or feel free to contact us.

• Sealing

"TOMBO No.9096-S" is a soft-type PTFE gasket. It has excellent chemical resistance and insulation properties, combined with heat resistance and flexibility, significantly improving its sealing capability. It possesses the required characteristics for gaskets in a well-balanced manner at a high level, making it suitable for a wide range of applications. 【Features】 ■ Soft-type PTFE gasket ■ Extremely high flexibility ■ Significantly improved heat resistance compared to general PTFE gaskets ■ Well-balanced characteristics at a high level ■ Usable in a wide range of applications *For more details, please download the PDF or feel free to contact us.

• Sealing

The "Spatter Sheet" has excellent heat resistance compared to untreated carbon sheets and contains no asbestos. It is flexible and easy to handle, and is resistant to bending and friction. It can be used as a protective material on job sites. Due to its high instantaneous heat resistance, it can be used in various environments. The resin processing repels sparks and provides water repellency and thermal insulation, and it comes with eyelets for easy installation. 【Features】 ■ Made from 100% glass fiber with a silicone resin coating ■ High instantaneous heat resistance allows for use in various environments ■ Resin processing repels sparks and provides water repellency and thermal insulation ■ Comes with eyelets for easy installation *For more details, please download the PDF or feel free to contact us.

• Other safety and hygiene products

"Carbon sheet" is a non-asbestos textile made from acrylic fibers, woven in a plain weave with fibers that have been carbonized through heat treatment. Since it contains no asbestos at all, it is considerate of human health and the environment, and can be easily cut and processed. It can be utilized as a cost-effective heat-resistant and flame-retardant material for ensuring safety in on-site work and protecting equipment. [Features] - 100% carbonized fibers used, providing non-combustibility and fire resistance - Lightweight, making it easy to transport and work with on-site - No toxic gas generation or skin irritation *For more details, please download the PDF or feel free to contact us.

• Other safety and hygiene products

This product is a metal gasket developed based on a rational design for high-temperature and high-pressure flange sealing materials. It maintains stable sealing performance over a wide range and does not easily cause leakage or damage even under harsh conditions such as thermal cycles, pressure cycles, and thermal pressure in piping systems. Please feel free to contact us when you need assistance. 【Features】 ■ Withstands high-temperature and high-pressure conditions, maintaining excellent sealing performance even when usage conditions change rapidly. ■ Low adhesion to flanges makes cleaning easy and allows for smooth gasket replacement work. * For more details, please download the PDF or feel free to contact us.

• Sealing

This product is a type of semi-metallic gasket commonly referred to as a spiral wound gasket. Due to its unique structure, it can be used under high temperature and high pressure conditions similar to metal gaskets, while demonstrating excellent sealing performance. It is widely adopted in piping and equipment across a broad range of fields. Please feel free to contact us when you need assistance. 【Features】 ■ A spiral structure made by alternately layering a V-shaped cross-section metal strip (hoop) and a non-metallic cushioning material (filler), which are then securely welded at the beginning and end of the spiral. ■ Four types of shapes are available to match the gasket seating of the target flange: basic shape, with inner and outer rings, with outer ring, and with inner ring. *For more details, please download the PDF or feel free to contact us.

• Sealing

We would like to introduce the "D1000 Spiral Wound Gasket" that we handle. We offer three products: the "Spiral Wound Gasket with Inner and Outer Rings," which allows for easy centering of the gasket due to the outer ring; the "Spiral Wound Gasket with Outer Ring," used in joints that do not require the pressure resistance of the type with inner and outer rings; and the "Basic Diameter Spiral Wound Gasket," used in various pressure vessel covers. We can also manufacture oval shapes and dimensions outside of standard specifications. We can accommodate urgent maintenance needs for valves, such as basic types or those with only inner rings. 【Product Lineup】 ■ Spiral Wound Gasket with Inner and Outer Rings ■ Spiral Wound Gasket with Outer Ring ■ Basic Diameter Spiral Wound Gasket ■ Oval Spiral Wound Gasket (Special Dimensions) ■ Spiral Wound Gasket with Inner and Outer Rings (Special Dimensions) *For more details, please download the PDF or feel free to contact us.

• Sealing

This product is a spiral wound gasket that uses PTFE tape as the filler material. Thanks to the excellent chemical resistance and corrosion resistance of PTFE, it is suitable for acidic fluids and corrosive fluids that are difficult to handle with non-asbestos or graphite-based gaskets. Please feel free to contact us when you need assistance. 【Specifications】 ■ Maximum pressure: 29.4 MPa (300 kgf/cm²) ■ Temperature range: -260 to 300℃ *For more details, please download the PDF or feel free to contact us.

• Sealing

This product is a spiral wound gasket made with graphite (graphitic material) tape as the filler material. Due to the properties of graphite-based materials, it maintains excellent sealing performance even under harsh conditions where temperature cycles from high to low are repeated. Please feel free to contact us when you need assistance. 【Specifications】 ■ Maximum pressure: 29.4 MPa (300 kgf/cm²) ■ Temperature range: -270 to 450℃ *For more details, please download the PDF or feel free to contact us.

• Sealing

This product is a gasket with excellent mechanical strength by inserting stainless steel plates (SUS316) into the core material. It has a heat resistance temperature equivalent to that of asbestos sheets and is also excellent in corrosion resistance. It has a long-standing high performance in Europe, where the transition to non-asbestos materials has progressed, and it is a gasket material that can be used over a wide temperature range from high temperatures to extremely low temperatures. 【Features】 ■ Excellent heat resistance and chemical resistance ■ Sealing performance and chemical resistance comparable to asbestos joint sheets ■ Excellent corrosion resistance ■ Wide operating temperature range from high to extremely low temperatures ■ Excellent compressibility *For more details, please download the PDF or feel free to contact us.

• Sealing

The "Bulker No. GF300" contains no rubber at all, making it a joint sheet for steam piping that does not undergo thermal degradation. It can also be used at high temperatures. By utilizing a flexible resin binder, we have improved brittleness and susceptibility to damage compared to expanded graphite sheet gaskets. Please feel free to contact us when you need assistance. 【Features】 ■ No hardening degradation due to heat or aging ■ Since hardening does not occur, re-tightening is possible ■ Applicable to a wide range of fluids *For more details, please download the PDF or feel free to contact us.

• Other films and sheets
• Sheets and Films

"TOMBO No.1133" is a white high-temperature resistant sheet gasket made primarily from PTFE and alumina. Since it uses alumina, which has excellent chemical resistance, there is no need to differentiate gaskets based on the type of fluid, such as acids or alkalis. Additionally, it can withstand high temperatures and high pressures, making it suitable for use in areas where electrical insulation is required. 【Standard Sizes】 ■Thickness: t1.5, t2.0, t3.0 ■Size (mm): 1270×1270 (standard) *For more details, please download the PDF or feel free to contact us.

• Other films and sheets
• Sheets and Films

We would like to introduce our steam piping joint sheet 'TOMBO No.1155'. Thanks to our unique formulation technology, we have successfully minimized the creep at high temperatures, which is a drawback of PTFE, allowing for excellent sealing performance even under high temperatures. Since PTFE is the main material, degradation at high temperatures is minimal, and it can be re-tightened as needed, ensuring safe and reliable long-term use. 【Features】 ■ High compressive strength ■ Difficult to break when installed on flanges ■ Can be installed safely *For more details, please download the PDF or feel free to contact us.

• Other films and sheets
• Sheets and Films