ダイコー List of Products and Services

This is a gasket made from Daiko's "D Packing (EPDM molded packing)" rubber, which is pressure-formed into a cross-sectional shape. For areas requiring chemical resistance and corrosion resistance, we also offer PTFE-coated products that are integrally bonded with PTFE! This packing material provides stable sealing performance at lower surface pressure compared to punched rubber sheet gaskets. (Characteristics) - Being a molded product, it has no uneven thickness and a smooth surface. - The presence of two O-ring shaped protrusions ensures no leakage even at low surface pressure. - The hardness of the rubber is appropriately adjusted to buffer thermal stress and piping stress. - Made from high-quality virgin rubber, it has a long lifespan. - It can also be used with resin and resin-lined flanges. (Supported Sizes) 5K 15A~300A 10K 15A 300A (Operating Temperature Range) -40℃~ 100℃ For sizes above 350A, rubber punched products will be used. (Maximum Operating Pressure) 0.98MPa (approximately 10kgf/cm²)

"Rubber molded products" enable simple vibration isolation for suspended equipment by combining rubber bushes and rubber washers. We offer a lineup of rubber molded products, including rubber bushes with bonded washers, as well as dimensionally stable "EPDM molded gaskets" and "ribbed gaskets." These products can be used for suspended support of air conditioning equipment, packaged air conditioners, fan coil units, ventilation systems, pumps, blowers, pipes, ducts, and other devices. [Features] - Enables simple vibration isolation for suspended equipment - Rubber bushes come with bonded washers *For more details, please refer to the PDF materials or feel free to contact us.

The Daiko-made "Vibration-Absorbing Pad" features uneven surfaces on both sides and serves as a cushioning, vibration-damping, and soundproofing material. It prevents the transmission of vibrations, absorbs light noise, and mitigates impacts, functioning as a rubber mat. Simply placing it under the object allows for easy vibration-damping effects. It is easy to install, provides both vibration and soundproofing effects, can be cut to specified dimensions, and is economical. 【Features】 ■ Extremely easy installation ■ Significant vibration and soundproofing effects ■ Excellent cushioning effect ■ Economical *For more details, please refer to the PDF document or feel free to contact us.

This catalog features products from Daiko Co., Ltd., which manufactures and sells various types of gaskets and industrial products. Our company processes gaskets and packing using a variety of machines, including one of Japan's largest water jet cutting machines. We also have a wide range of items such as joint sheets, rubber, sponge, and resins. Our original brand, the non-asbestos joint sheet "D-6000," is among our well-developed products. 【Featured Products】 ■ Non-asbestos Joint Sheet D-6000 ■ Graphite Spiral Gasket D-1000 ■ Teflon Cushion Gasket D-7000 ■ SGM Soft Teflon Gasket ■ Rubber Packing, etc. *This PDF is a digest version. Please feel free to contact us if you need the full version.

We are processing materials using various machines, including one of the largest water jets in Japan (processing range 4000W x 5800L). We would like you to visit our factory to see how packing and gaskets are made, the scale of our factory, and what materials can be processed. ★ We are also conducting test processing, so please feel free to contact us. We hope to provide information that can be of help to our customers.

At Daiko, we conduct test processing using one of Japan's largest water jets (processing range 4000W x 5800L). Various industrial products such as gaskets and packing (non-asbestos joint sheets, rubber, sponge, and resin) can be processed. "Features of Water Jet" 1. No thermal impact... Since tools like blades and drills do not touch the material, there is no heat generation. 2. Processing range... The processing range of 4000W x 5800L is one of the largest in the country. 3. No molds required... Unlike press processing, which requires molds and dies, water jet processing uses high-pressure water, so molds are not necessary. 4. Small lots... Since molds are not required, we can accommodate small lots without incurring high costs. "Water Jet Processing is Recommended for Those Who" 1. Cannot find processing services for large-diameter materials. 2. Want to test process using new materials. 3. Are troubled by changes or discoloration due to heat generation during processing. We hope to provide information that can be of help to our customers.

At Daiko Co., Ltd., we are offering a gasket fluid compatibility chart! Are you having trouble selecting gaskets and packing? With the transition from asbestos to non-asbestos, it has become difficult to choose the right type. We have compiled a list of compatible products from various manufacturers for your reference, and we hope you find it useful for your selection process. Please note that this is a guideline, and the suitable products may vary depending on the usage conditions, so feel free to contact us for more details.

This catalog is a comprehensive catalog (digest version) featuring products from Daiko Co., Ltd., which manufactures and sells various types of gaskets and industrial products. Our company processes gaskets and packing using a variety of machines, including one of Japan's largest water jet cutting machines (hydro-cutting machines). We also have a wide range of items, including joint sheets, rubber, sponge, and resins. Our original brand, the non-asbestos joint sheet "D-6000," is among our well-developed products. Please utilize the fluid compatibility tables and necessary information for selecting piping and valves! 【Featured Products (Partial)】 ■ Non-asbestos joint sheet D-6000 ■ Graphite spiral wound gasket D-1000 ■ Teflon cushion gasket D7000 ■ SGM soft Teflon gasket ■ Rubber packing, etc. *This PDF is a digest version. If you need the full version, please feel free to contact us.

This catalog is a comprehensive catalog (digest version) featuring products from Daiko Co., Ltd., which manufactures and sells various types of gaskets and industrial products. Our company processes gaskets and packing using various machines, including one of Japan's largest water jet cutting machines (hydro cutting machines). We have a wide range of items, including joint sheets, rubber, sponge, and resins. We also offer our original brand non-asbestos joint sheet "D-6000" and other products tailored to domestic manufacturers such as Nichias and Bulker. Please utilize the fluid compatibility charts and necessary information for selecting piping and valves! 【Featured Products (Partial)】 ■ Non-asbestos joint sheet D-6000 ■ Graphite spiral wound gasket D-1000 ■ Teflon cushion gasket D7000 ■ SGM soft Teflon gasket ■ Rubber packing, etc. *This PDF is a digest version. If you need the full version, please feel free to contact us.

We handle natural rubber "rubber washers" and rubber material EPDM, with washer material SS400 "rubber bushes." By combining these, simple vibration isolation for suspended equipment is possible. The rubber bushes have washers bonded to them. We also offer packing material for flexible unions, "EPDM molded packing," and "rib packing EPDM molded packing" with O-ring protrusions on the surface. 【Product Lineup】 ■ Rubber Washers ■ Rubber Bushes ■ EPDM Molded Packing ■ Rib Packing EPDM Molded Packing *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "rubber and sponge packing" that we handle. Our lineup includes "gaskets" made from various rubber sheets punched to suit different applications, "rubber sponge" which has moderate cushioning properties and can also be used as cushioning material, "O-rings" used to prevent the leakage of liquids and gases, and "vibration pads" that prevent vibration transmission, absorb light noise, and mitigate shocks. Please feel free to contact us when you need our services. 【Basic Handling Materials for Rubber Sheets (Example)】 ■ NR Natural Rubber ■ CR Neoprene Rubber ■ EPDM Ethylene Propylene Rubber ■ NBR Nitrile Rubber ■ Si Silicone Rubber ■ IIR Butyl Rubber *For more details, please download the PDF or feel free to contact us.

I was using a rubber sheet gasket, but there was a leak. When I removed the gasket to check, a part of it was torn. ■Details of the issue 〇 The rubber sheet has a low compressive strength (14.7 N/mm²), so care must be taken not to over-tighten it. 〇 If the gasket is ring-shaped or if the flange has a flat seat (in the case of RF), there is a risk of excessive surface pressure. ■Countermeasures 〇 If the flange has a full face (FF), the gasket should also be full face. 〇 If the flange has a flat seat (RF), consider whether other gaskets, such as joint sheets, can be used. 〇 Manage torque to avoid over-tightening. 〇 Set the maximum operating pressure to 1.0 MPa as a guideline.

This is a compatibility chart for rubber fluids. It lists the compatibility of various types of rubber, including natural rubber, neoprene rubber, NBR rubber, EPDM rubber, Viton rubber, and silicone rubber, with different fluids. While it is only a guideline, it serves as an example of systematic categorization. Please use it for selection purposes.

"I want to process rubber with a thickness of 100mm." "Since it's a prototype, I want to make it without a mold." "I want you to cut complex shapes with high precision." Daiko's water jet processing solves these challenges of thick and precision rubber processing. We accommodate a variety of materials, from natural rubber to fluorine rubber, and faithfully reproduce various shapes from just one of your drawings. *You can view the detailed content of the column through the related links. For more information, please download the PDF or feel free to contact us.

We would like to introduce our general piping joint sheet 'TOMBO No.1995'. This is a brown non-asbestos joint sheet that contains no asbestos, made by adding inorganic fillers to inorganic fibers and aramid fibers, with oil-resistant synthetic rubber as a binder. The sealing thickness is 1.5mm, and the shape used is a ring type (FR). In cases where maintenance is difficult, vortexes and other methods may be used. 【Usage Range】 ■ Water-based fluid pressure resistance: 2MPa / Maximum operating temperature 183℃ ■ Oil-based fluid pressure resistance: 2MPa / Maximum operating temperature 183℃ ■ Gas-based fluid pressure resistance: 1MPa / Maximum operating temperature 183℃ *For more details, please download the PDF or feel free to contact us.

"Vulcan No. 6500" is a sheet-like gasket material made by mixing a special rubber-based binder with organic and inorganic fibers and a small amount of filler, followed by rolling and vulcanization. It does not contain asbestos fibers, making it suitable as a non-asbestos alternative to asbestos joint sheets. Please feel free to contact us when you need assistance. 【Usage Range】 ■ Water-based fluid pressure resistance: 2MPa / Maximum operating temperature 160℃ ■ Oil-based fluid pressure resistance: 2MPa / Maximum operating temperature 160℃ ■ Gas-based fluid pressure resistance: 1MPa / Maximum operating temperature 160℃ *For more details, please download the PDF or feel free to contact us.

"TOMBO No.1120" is a non-asbestos joint sheet that can cover the practical application areas of asbestos joint sheets. It is a black sheet gasket that contains no asbestos, reinforced with aramid fibers primarily made of expanded graphite. It uses oil-resistant rubber as a binder. Please feel free to contact us when you need it. 【Features】 ■ Usable for saturated steam at 2MPa ■ Excellent heat resistance, steam resistance, and corrosion resistance ■ Resistant to scratches and highly flexible *For more details, please download the PDF or feel free to contact us.

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.

"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.

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.

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.

Based on the customer's drawing, we produced a large curtain measuring 1250mm x 5600mm from a 6mm thick natural rubber sheet. Using our water jet cutting machine, we precisely cut the upper mounting holes (19 holes of φ15mm) and the curtain-like slits as a single unit. *For detailed information about the column, please refer to the related link. For more details, you can download the PDF or feel free to contact us.

Based on the customer's drawing, we manufactured a large-diameter gasket with an outer diameter of φ548mm and an inner diameter of φ410mm from a 5mm thick NBR rubber sheet. First, we precisely cut the gasket body (with 16 φ27mm bolt holes on a P.C.D. of 510mm) and the ring-shaped parts using a water jet cutting machine. After that, we bonded the rings to both sides of the body, finishing it as a stepped seal gasket. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.

This is an example of producing a large and complex U-shaped gasket measuring 545mm x 709mm from a non-asbestos joint sheet "Valqua No. 6500" with a thickness of 3mm, based on the customer's drawing. The processing involved drilling 17 holes with a diameter of 21mm. Using our water jet cutting machine, we achieved high precision cutting directly from CAD data. Valqua No. 6500 is a non-asbestos general-purpose joint sheet made by combining organic and inorganic fibers with NBR and other materials. It demonstrates good sealing properties against general utility fluids and has a long track record in a wide range of applications, including petroleum refining, chemical plants, ships, and general piping. [Processing Features] - Proposal for cost reduction - Low cost and short delivery time without the need for a die - Direct processing from drawings - Easy repeat orders with data storage *For more details, please download the PDF or feel free to contact us.

The selection of rubber materials is an extremely important process that determines the performance, lifespan, and safety of a product. However, with a wide variety of options available, from natural rubber to fluorine rubber, it is not easy to judge "which rubber is the most suitable." This article serves as a comprehensive guide that consolidates information about seven major types of industrial rubber that have been individually explained so far. By deeply exploring the unique "personalities" of each material, focusing on their core characteristics and operating temperatures, we hope to assist you in making more informed material selections. We will also provide insights from the perspective of the specialized trading company Daiko, covering everything from optimal material selection to precision processing. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.

Outdoor use, contact with oil, repetitive motion, and safety. Industrial rubber components often require these seemingly contradictory performances simultaneously. To meet such complex demands, neoprene rubber (chemical name: chloroprene rubber, CR) was developed as an "engineering solution." In this article, we will redefine why neoprene is positioned as a "reliable standard material" for many engineers, based on its multifaceted performance data. Furthermore, we will propose specific applications and selection and processing solutions to maximize its performance in collaboration with the specialized trading company Daiko. *For detailed content of the column, please refer to the related link. For more information, feel free to download the PDF or contact us.

For the stable operation of industrial machinery, lubricants and hydraulic oils are essential. However, these oils can also cause many rubber materials to swell and deteriorate. To address this fundamental issue, NBR (nitrile rubber) was developed. NBR is a synthetic rubber designed with the clear purpose of "performing well in oil environments," and it should be called a specialist. In this article, we will deeply analyze why NBR has become synonymous with oil resistance, exploring the essence of its performance through physical property data. Additionally, we will clarify its "strengths" and "weaknesses" as a specialist, and propose suitable material selection and processing solutions in collaboration with the specialized trading company Daiko. *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 automobiles, buildings, and social infrastructure we see are constantly exposed to harsh environments such as sunlight, ozone, and rainwater. To ensure these facilities function over a long period, a "protective material" that shields the interior from environmental factors is essential. The key role in this is played by EPDM (ethylene propylene diene monomer rubber). In this article, we will redefine why EPDM is indispensable as the "invisible protective material" of modern society, based on its core performance characteristics derived from physical property data. Furthermore, we will propose selection and processing solutions to enable this excellent protective material to function as actual components, in collaboration with the specialized trading company Daiko. *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 product development and technological innovation, "temperature" often stands as an insurmountable barrier. However, there exists a special material that can break through that barrier and enable technologies in areas that were previously deemed impossible. That material is silicone rubber (Si). In this article, we will redefine the essential properties of silicone rubber, demonstrating how it is not merely a "heat-resistant and cold-resistant material," but rather a "solution" that can expand technical limits. Furthermore, we will explain the selection and processing of this special material to elevate it into functional components from the perspective of the specialized trading company Daiko. *For more detailed content of the column, please refer to the related links. For further information, feel free to download the PDF or contact us.*

Modern advanced technologies must overcome extremely harsh environments, such as high temperatures exceeding 200°C and highly corrosive chemicals. In these extreme conditions, while other materials lose their performance, high-performance elastomers, specifically fluorine rubber (FKM), continue to exhibit stable performance over the long term. Its overwhelming heat resistance and chemical resistance place it among the highest class of rubber materials, establishing it as one of the reliable solutions in modern industry. This article will elucidate the ultimate performance of fluorine rubber through physical property data and propose selection and processing solutions to maximize its capabilities in collaboration with the specialized trading company Daiko. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.*

High loads, strong impacts, and intense wear. Under such harsh conditions, rigid plastics can crack, and common rubber can tear. To solve this engineering challenge, a special material that combines the advantages of the rigidity of hard materials and the elasticity of rubber has been developed: urethane rubber (U). In this article, we will redefine why urethane rubber can be a new solution in high-load environments by examining its remarkable physical properties through material data. Furthermore, we will explain the operational rules for maximizing the use of this high-performance material, as well as the processing and selection solutions provided by the specialized trading company Daiko. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.*

Among the various rubber materials, natural rubber (NR) is considered the origin and reference point. Even in today's world where various high-performance synthetic rubbers are developed, the exceptional mechanical properties of natural rubber continue to hold irreplaceable value in many fields. In this article, based on the provided physical property data, we will delve into why natural rubber remains indispensable in the industrial sector, exploring the core secret of its "strength" and the "weaknesses" that one should understand to maximize that strength. We will deliver solutions from the specialized trading company Daiko, from suitable material selection to precision processing. *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.*

This is an example of producing a large-diameter flange gasket with an outer diameter of φ695mm and an inner diameter of φ595mm from a 3mm thick silicone rubber sheet based on the customer's drawing. The processing involved drilling 12 bolt holes of φ15mm on a P.C.D. of 655mm. Using our water jet cutting machine, we achieved high-precision cutting according to the data. Since no die was required, we were able to respond quickly to a request for a single prototype. Water jet cutting is suitable for processing elastic materials like rubber because it cuts with a high-pressure water stream. 【Processing Features】 ■ No die required, low cost, and short delivery time ■ Direct processing from drawings ■ High-quality cutting with no thermal impact ■ Easy repeat orders with data storage *For more details, please download the PDF or feel free to contact us.