ダイコー List of Products and Services

■Overview of Processing Example Product Name: 3-Pass Gasket Dimensions: Outer Diameter φ990 × Inner Diameter φ960 × t3 This processing example involves the machining of a gasket with a 3-pass structure that divides the flow path. The client operates in the piping and equipment-related field. The product specifications require a configuration that includes a large-diameter ring shape along with internal partition shapes, necessitating reproducibility of the flow path shape and continuity of the seal line. The product feature is the ability to finish the outer shape, inner diameter, and internal shape as a single unit while accommodating the flow path division due to the 3-pass structure. The machining method selected was water jet cutting. This method allows for machining without thermal impact, making it easier to ensure shape reproducibility even for complex shapes, and enables machining of holes, inner diameters, and outer shapes according to the drawings. The effects of the machining include stable dimensional reproducibility of the internal shapes, ensuring assembly compatibility, and contributing to uniformity in finished quality.

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■Overview of Processing Example Product Name: MT Plate Stainless Steel Decorative Plate (Two-Part Shape) Dimensions: 250φ × 110φ This processing example is a decorative plate made of stainless steel that covers the piping penetration areas in walls and floors. To allow for retrofitting even after the piping has been installed, a two-part structure with a circular shape has been adopted. The client’s industry is related to building equipment and plumbing construction. In the construction site, both ease of installation without removing the piping and aesthetic finish were required. The features of this product include retrofitting capability due to the two-part structure and a shape accuracy that minimizes the visibility of gaps and steps after installation. Laser processing was used as the processing method. Non-contact processing allows for high-precision machining of the straight and arc sections of the split surfaces, reducing discomfort during assembly. As a result, this leads to improved workability and stabilization of appearance quality.

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■Overview of Processing Example Product Name: Uneven Hole Gasket Dimensions: t1 × Outer Diameter φ80 × Inner Diameter φ45 (P61 - Uneven Holes) Material: NBR Rubber Processing Method: Water Jet Cutting This processing example involves the production of an NBR rubber gasket with multiple holes arranged unevenly. It is used as a component part for industrial machinery, requiring dimensional accuracy to ensure reliable assembly even with non-uniform hole diameters and positions. By using water jet cutting, it achieves the reproduction of the hole arrangement and shape as per the design without the use of molds.

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■Overview of Processing Example Product Name: SUS304 Nameplate Dimensions: 2t × 30W × 150L (Mounting Hole φ15×1) Material: SUS304 Processing Method: Laser Processing This processing example involves the manufacturing of a SUS304 nameplate used in industrial machinery and equipment. Mounting holes were created in an elongated plate shape, and processing was required in a letter-cut shape to display part numbers and identification information. The client's industry is related to industrial machinery and equipment. Since the nameplate is permanently attached to the equipment, SUS304 material, which has excellent corrosion resistance, was adopted, and it was emphasized that the displayed content should remain legible over a long period. The product features high visibility due to the letter-cut processing and a unified shape that includes the mounting holes. Laser processing was selected as the method. Laser processing allows for non-contact cutting, which minimizes distortion even in thin SUS304 sheets and accurately reproduces fine letter outlines and hole shapes as per the data. As a result, the variation in letter shapes has been reduced, contributing to the stabilization of mounting accuracy and appearance quality for the equipment.

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■Overview of Processing Example Product Name: T1120 Steam Gasket Dimensions: 128 square (Center hole φ76, multiple bolt holes) Material: TOMBO No.1120 Processing Method: Water Jet Cutting The outer shape is square, featuring a large diameter center hole in the middle and multiple mounting bolt holes arranged around it. Since this product is used in steam lines, dimensional accuracy to ensure stable sealing performance and positional accuracy of the center hole and bolt holes are critical requirements. This product uses T1120 material, which emphasizes steam resistance, aiming to maintain stable performance even under steam conditions. Water jet cutting was selected as the processing method. Since T1120 contains fibrous materials, it tends to exhibit variability in edge quality and dimensional accuracy when processed with cutting tools. By using the non-contact method of water jet cutting, it became possible to reproduce the shape, including the center hole and multiple holes, according to the drawings while minimizing the load on the material. As a result, this contributes to stabilizing processing accuracy and improving assembly compatibility.

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■Overview of Processing Example Product Name: Neoprene Sponge Frame Gasket (with Single-Sided Tape) Dimensions: 190W × 320L (20mm Wide Frame) This processing example involves the fabrication of a frame-shaped gasket made from neoprene sponge material. It features a rectangular outer shape with an inner opening in a frame structure, and multiple mounting holes are arranged around the perimeter. One side is adhered with adhesive tape, enhancing the ease of assembly. The client’s industry is related to industrial equipment and devices. The characteristics of this product include water resistance and cushioning properties due to the neoprene sponge material, as well as the combination of frame shape and single-sided tape structure, which balances temporary fixation and work efficiency. Water jet processing was adopted for the manufacturing method. Since sponge materials are prone to crushing and dimensional variation with blade processing, non-contact processing is used to accurately reproduce the outer shape, inner shape, and hole positions according to the drawings, ensuring stable shape accuracy even after tape application.

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■Overview of Processing Example Product Name: Felt Gasket Dimensions: t9 × Outer Diameter φ160 × Inner Diameter φ54 (P110, 4 holes) This processing example involves the machining of a circular gasket made from felt material. In addition to the ring shape with outer and inner diameters, it features a structure with multiple mounting holes arranged in the circumferential direction, intended for applications such as cushioning, dust prevention, and sound absorption within equipment. Specifications require shape accuracy and reproducibility of hole positions. The client’s industry is related to industrial machinery. The characteristic of this product is its use as a gasket that takes advantage of the unique flexibility and porous structure of felt material. It is adopted to ensure compatibility with the counterpart components while protecting internal parts. The processing method employed is water jet cutting. Since felt material tends to fray and exhibit dimensional variations with blade processing, non-contact processing is used to cut the shape, allowing for stable machining of the outer diameter, inner diameter, and multi-hole shapes according to the drawings. This contributes to preventing positional misalignment during assembly and improving reproducibility.

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■Overview of Processing Example Product Name: Frame Gasket (with Outer R) Dimensions: 250□ 25w Frame Material: NBR Rubber Processing Method: Water Jet Cutting This processing example involves the production of an NBR rubber gasket in a frame shape with an R shape on the outer periphery, used in equipment for industrial machinery. This product is utilized for sealing the opening of the equipment, requiring a wide sealing width due to the frame shape and ensuring both safety and ease of handling with the outer R shape. The client is from the industrial equipment manufacturing sector, where dimensional accuracy and shape reproducibility are critical requirements based on assembly with existing equipment. The R specification on the outer periphery is processed according to the drawing instructions, which is expected to prevent snagging at the corners and enhance the safety of the workers. The processing method adopted is water jet cutting. As it is a method that does not use molds, it allows for stable processing of the frame shape, including the R shape, while keeping initial costs low. As a result, reproducibility of the shape, including the outer R part, is secured, contributing to the prevention of interference during assembly and improving workability.

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Product Name: NBR Rubber Frame Gasket (with Single-Sided Tape) Dimensions: t1 × 127W × 148L (Frame Width 18W, with Outer R) This processing example is an NBR rubber frame-shaped gasket used in the industrial equipment and machinery sector. The outer shape features a rectangular frame structure with an R specification on the outer perimeter, designed with safety and assembly considerations in mind. Additionally, the inclusion of single-sided tape enhances temporary fixation, improving work efficiency on-site. The product uses NBR rubber material, emphasizing oil resistance, and requires dimensional accuracy and stable quality.

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In plant and building construction, the insulation of equipment with "curved surfaces," such as piping, air ducts, and tanks, has always been a challenge for contractors. If flat board insulation materials are forcibly bent during installation, cracks and gaps (heat bridges) can occur, significantly reducing insulation performance. On the other hand, blanket rolls can sometimes make it difficult to maintain the shape during installation. To meet these seemingly contradictory demands of "perfect conformity to curved surfaces" and "ease of installation," Nichias Corporation has developed a high-performance rock wool insulation material called "MG Belt" using its unique technology. *For more details on the column, please refer to the related links. For further inquiries, feel free to contact us.*

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In insulation and soundproofing work for plants and factory equipment, the material's "thermal insulation performance" and "sound absorption performance," along with "ease of installation" and "shape retention (durability) after installation," become extremely important. In particular, for complex shapes and vertical surfaces, such as the walls of boilers exposed to high temperatures and the heads of large tanks, the fixation and retention of insulation materials have been long-standing challenges. To meet the conflicting demands of "high-performance insulation" and "reliable workability and durability," Nichias Corporation has developed the "MG Rass Board," which is a high-performance rock wool insulation material reinforced with metal. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

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"I want to reduce heat loss from the factory boiler." "I want to do something about the noise in the machinery room." "I want to use safe, non-combustible, and insulating materials in the building's ducts and partition walls." From plants and factories to building construction and general housing, "insulation (energy saving)," "sound absorption (soundproofing)," and "fire resistance (safety)" are extremely important issues that cannot be overlooked in modern facilities and architecture. The high-performance rock wool insulation material "MG Board" provided by Nichias Corporation meets these diverse demands at a high level with a single material. *For more details on the column, please refer to the related link. For more information, feel free to contact us.

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In plant, factory, and building construction, the greatest enemy of insulation materials is "water." Fiber-based insulation materials such as rock wool and glass wool experience a rapid increase in thermal conductivity once their air layers are replaced by water, resulting in a near-total loss of their insulating function. To address this fundamental issue in outdoor and humid environments, Nichias Corporation has developed the "MG Hassui Board." This high-performance product retains the excellent basic performance of Nichias's renowned rock wool insulation material, "MG Board," while adding powerful "water-repellent performance." In this article, based on Nichias Corporation's official product catalog, we will thoroughly explain why the MG Hassui Board is chosen as an insulation and sound absorption solution for outdoor equipment and humid environments, from the core of its performance to the critical temperature limit of "150°C" that you must absolutely know when selecting it. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.

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Based on the customer's drawings, we manufactured insulation material for air conditioning boxes from general-purpose polyethylene foam "P.E-Light B-4" (black color). Using our water jet cutting machine, we cut directly from CAD data with high precision. Since no die is required, we were able to respond quickly even to requests for single prototypes. Our company specializes in processing foam materials and insulation like P.E-Light, and we can accommodate a wide range of requests, from single prototypes to complex shapes and short delivery times. Please feel free to contact us. 【Case Overview】 ■ Material: General-purpose polyethylene foam "P.E-Light B-4" (black color) ■ Product: Insulation material for air conditioning boxes ■ Equipment used: Water jet cutting machine ■ Processing method: Direct high-precision cutting from CAD data *For more details, please download the PDF or feel free to contact us.

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"Rubber gaskets and packing" support the performance and safety of equipment. However, even when grouped under "rubber," there are many types, each possessing completely different characteristics (such as oil resistance, weather resistance, heat resistance, etc.). If this selection is incorrect, it can lead to serious issues such as "rubber swelling due to oil" or "cracking due to ozone." In this article, we will compare and explain the characteristics of nine major types of rubber materials, providing the foundation for a "selection guide" to help you choose the right product for your application. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*

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In the industrial sector, there are extreme high-temperature and high-pressure areas that cannot be reached with composites made of rubber, resin, or non-metals, such as plants, offshore facilities, and pressure vessels. To contain fluids with absolute reliability under such harsh conditions, the "metal gasket," composed entirely of metal, was designed, with the "ring joint gasket" being a representative example. In this article, based on the official product documentation from Vulcan, we will thoroughly explain why ring joint gaskets exhibit high sealing performance, the secrets of their structure, the differences between the two important shapes, "octagonal" and "oval," and the correct material selection and usage to fully utilize their capabilities. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.

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Leakage from gaskets in plant and factory piping flanges is a serious issue that directly leads to production stoppages, energy losses, and significant safety accidents. Many of these troubles are caused by "inadequate management of tightening force," that is, poor construction. In this article, we will explain why "torque management" is essential for gasket sealing, the fundamental theory behind it, and an overview of the three common types of tightening failures (insufficient, excessive, and uneven tightening) along with their examples and countermeasures. *For detailed content of the column, please refer to the related links. Feel free to contact us for more information.*

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In November 2015, the "RCF Regulation (Revised Labor Safety and Health Law)" was enacted, overturning the conventional wisdom regarding high-temperature insulation materials. RCF (Refractory Ceramic Fiber), which was once the mainstream high-temperature insulation material, became subject to legal management due to concerns about its carcinogenicity. This article answers the fundamental question of "What is the RCF Regulation?" and thoroughly explains why RCF is regulated and why AES (Bio-soluble Fiber) is considered the optimal alternative. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

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We would like to introduce a case where we manufactured three "D1000 spiral gaskets (basic type)" (thickness 4.5mm, φ65×φ51) as high-temperature and high-pressure gaskets based on the customer's specifications. A metal hoop with a V-shaped cross-section and a sealing material filler (such as expanded graphite) were precisely wound into a spiral shape using a dedicated winding machine, and the start and end points were securely fixed with spot welding. Our company specializes in the production of spiral gaskets, which are essential for high-temperature and high-pressure steam lines and process lines. We can accommodate a wide range of requests, from small lot orders to consultations on special materials and dimensions. Please feel free to contact us. [Case Overview (Partial)] ■ Material: D1000 ■ Product: 3 spiral gaskets ■ Dimensions: Thickness 4.5mm, φ65 × φ51 *For more details, please download the PDF or feel free to contact us.

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We would like to introduce a case where we manufactured six large frame-shaped gaskets measuring 680mm square and 60mm wide from a 3mm thick non-asbestos joint sheet "D6000" based on the customer's drawings. The processing involved drilling seven holes with a diameter of 8mm and twenty-four holes with a diameter of 19mm. We used a water jet cutting machine to cut directly from CAD data with high precision. Our company specializes in the production of complex-shaped gaskets based on drawings using water jet cutting machines. We can accommodate a wide range of requests, from a single prototype to complex shapes and short delivery times. Please feel free to contact us. 【Case Overview】 ■ Material: 3mm thick non-asbestos joint sheet "D6000" ■ Product: Six large frame-shaped gaskets ■ Shape: 680mm square, 60mm wide ■ Processing details: Drilling seven holes with a diameter of 8mm and twenty-four holes with a diameter of 19mm ■ Processing method: High-precision cutting directly from CAD data using a water jet cutting machine *For more details, please download the PDF or feel free to contact us.

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We would like to introduce a case where we manufactured a D1000 spiral gasket (thickness 4.5mm) for an oval opening (300mm×400mm, seal width 25mm) based on the customer's drawing. It prevents leaks of high-temperature and high-pressure steam or hot water. In this case, we produced a V-shaped cross-section metal hoop and filler, which is the sealing material, with high precision using a dedicated winding machine. The spiral gasket is a high-performance semi-metallic gasket that is rationally designed for high temperature and high pressure applications. We can also manufacture spiral gaskets with special shapes based on the customer's drawings and specifications. Please feel free to contact us. 【Case Overview (Partial)】 ■ Material: D1000 ■ Product: Spiral gasket ■ Shape: Oval (300mm×400mm, seal width 25mm) *For more details, please download the PDF or feel free to contact us.

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We would like to introduce a case where we produced 10 pieces of a strip-shaped gasket measuring 15mm × 350mm from a 5mm thick NBR rubber sheet based on the customer's drawing. After precisely cutting it with our water jet cutting machine, we applied tape processing on one side before delivery. The greatest feature of NBR (nitrile rubber) is its overwhelming stability in oil environments. It has excellent oil resistance, abrasion resistance, and aging resistance, along with mechanical reliability. Due to these properties, it is widely used in various industrial applications involving oil, such as oil seals, gaskets, and oil-resistant hoses. [Case Overview] - Material: 5mm thick NBR rubber sheet - Product: 10 gaskets - Shape: Strip shape of 15mm × 350mm - Processing details: - Precisely cut with a water jet cutting machine, then tape processing was applied on one side. *For more details, please download the PDF or feel free to contact us.

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We would like to introduce a case where a frame-shaped gasket was produced from graphite-treated glass cloth "D5400" with a thickness of 3.2mm, based on the customer's drawing. The size is 300mm × 350mm with a width of 45mm, and the processing involved drilling 14 bolt holes with a diameter of 15mm. Using our water jet cutting machine, we achieved high precision cutting directly from CAD data. The glass cloth has been rubber-coated and further treated with graphite on the surface to prevent burning onto the flange, resulting in a non-asbestos heat-resistant gasket. It has excellent thermal insulation properties and can withstand high temperatures up to 400°C. 【Case Summary】 ■ Material: D5400 Glass Cloth Gasket ■ Product: Frame-shaped Gasket ■ Dimensions: 300mm × 350mm, 45mm width ■ Processing Details: Drilling 14 bolt holes with a diameter of 15mm ■ Processing Method: - High precision cutting using a water jet cutting machine directly from CAD data *For more details, please download the PDF or feel free to contact us.

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"The manhole packing of the incinerator deteriorates quickly at high temperatures." "I can't find a large-diameter gasket that fits the corner flange of the exhaust duct." "For the hot air line of the dryer, I don't need high airtightness, but I want a sealing material that is heat-resistant." Are you struggling to address the sealing and insulation challenges unique to high-temperature, low-pressure exhaust systems with general-purpose gaskets like joint sheets? Maintenance of high-temperature hot air and exhaust lines requires specialized properties such as "heat resistance," "flexibility," and "workability." To solve these issues, Daiko Co., Ltd., a specialized manufacturer of industrial gaskets, has prepared a free PDF catalog focused on the maintenance of high-temperature equipment such as exhaust systems, boilers, and dryers. *For more details on the column, please refer to the related links. Feel free to contact us for more information.

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The stable operation of boiler equipment is the foundation of various industries. On the other hand, due to the harsh environment of high temperature and high pressure, consumable parts such as water level gauges, valves, and piping flanges require regular inspections and prompt replacements. However, when selecting parts, challenges such as "not being able to arrange genuine parts in time," "not knowing compatible parts from other manufacturers," and "not knowing where to order custom gaskets" are always present. To everyone involved in the maintenance and upkeep of boilers, we have prepared the Daiko Co., Ltd. 【Boiler Parts Catalog】 (free PDF), which condenses the necessary parts selection, technical data, and a "manufacturer comparison chart" into one book. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.

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"I want a large-diameter gasket that is not a standard product." "I want a one-off item precisely processed from the drawing." "I want to quickly confirm the tightening torque for the JIS flange needed for construction." "It takes time to find equivalent products from Nichias or Vulcan." These requests for "custom processing" and the concerns about "selecting standard products." At Daiko, a specialized manufacturer of gaskets and packing, both can be resolved with this one comprehensive catalog. Our company is a processing manufacturer of industrial products with over 50 years of experience. We go beyond mere product sales and respond to various challenges faced by our customers with our technical expertise. *For detailed content of the column, please refer to the related links. For more information, please feel free to contact us.

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We would like to introduce a case where a gasket for a pump was manufactured from a non-asbestos joint sheet "Vulcan No. 6500" with a thickness of 2mm, based on the customer's drawing. The shape was complex, based on a ring with a diameter of φ180mm × φ115.4mm, featuring notches and multiple bolt holes (16 holes/32 holes). Using our water jet cutting machine, we cut directly from CAD data with high precision. 【Case Overview】 ■ Material: Vulcan No. 6500 ■ Product: Gasket for pump ■ Shape ・ Based on a ring with a diameter of φ180mm × φ115.4mm ・ Complex shape with notches and multiple bolt holes (16 holes/32 holes) ■ Processing Method ・ Cut directly from CAD data with high precision using a water jet cutting machine *For more details, please download the PDF or feel free to contact us.

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In the design and maintenance of piping for plants and equipment, gasket selection is extremely important yet one of the most challenging tasks. In particular, confirming compatibility with "fluids" (chemical resistance) is the first hurdle in the selection process. The types of fluids vary widely, including water, oil, gas, and corrosive fluids (acids and alkalis). If the selection is incorrect, there is a risk of serious accidents or production stoppages due to leaks. To solve the "problems" faced by busy design and maintenance personnel, Daiko Co., Ltd., a gasket expert, has prepared a truly useful "Fluid Compatibility Table" as a free white paper (PDF document) for the field. *For more details on the column, you can view it through the related links. For further inquiries, please feel free to contact us.

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We would like to introduce a case where we created a decorative plate from plywood based on the customer's design data. First, we cut it to the specified dimensions using a laser cutting machine, and then we used a laser marker to draw a delicate and beautiful phoenix design. From cutting to the intricate artwork, we handled everything consistently with our laser processing machine. If you have requests such as "I want to create an original sign" or "I want to add a logo to a commemorative item," please feel free to consult with us. 【Case Overview】 ■ Material: Plywood ■ Product: Decorative Plate ■ Work Details ・Cut to specified dimensions with a laser cutting machine ・Draw a delicate and beautiful phoenix design using a laser marker *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a case study of water jet processing of our heat-resistant glass cloth "D5400." Based on the DXF data provided by the customer, we manufactured a gasket measuring 62.5mm square from the 3.2mm thick "D5400." Using a water jet cutting machine, we precisely cut the outer shape and inner holes according to the data. Materials like glass cloth, which are soft and prone to fraying, can be finished beautifully when cut with water. [Case Overview] ■ Material: 3.2mm thick heat-resistant glass cloth "D5400" ■ Product: 62.5mm square gasket ■ Work Details - High-precision cutting of the outer shape and inner holes according to the data provided by the customer. *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a case where we manufactured nameplates for equipment from stainless steel plates at the request of a customer. First, we precisely cut the stainless steel plates to the dimensions and shapes specified by the customer using a laser cutting machine. After that, we clearly engraved the product name, model number, specifications, and other text information using a laser marker. By handling everything from cutting to marking in a consistent manner, we were able to deliver high-quality products quickly. If you have requests such as "I want to create an original nameplate" or "I want to add a management number to a part," please feel free to consult with us. [Case Overview] ■ Material: Stainless steel plate ■ Product: Nameplate for equipment ■ Work Details - Precisely cut to the dimensions and shapes specified by the customer using a laser cutting machine - Clearly engraved text information such as product name, model number, and specifications using a laser marker *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a case where we created original bookmarks from stainless steel and plastic sheets at the request of a customer. First, we precisely cut the shape of the bookmark using a laser cutting machine, and then we clearly engraved the specified text and design using a laser marker. By handling everything from cutting to marking in a consistent manner, we can produce high-quality original goods. If you have requests such as "I want to create an original bookmark" or "I want to engrave a name on a commemorative item," please feel free to consult with us. 【Case Overview】 ■ Material: Stainless steel and plastic sheets ■ Product: Original bookmarks ■ Work Details ・Precise cutting of the bookmark shape using a laser cutting machine ・Clear engraving of the specified text and design using a laser marker *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a case study of water jet processing of "EPDM rubber" that our company conducted. In this case, based on the drawings provided by the customer, we manufactured a large diameter flange gasket with an outer diameter of φ600mm and an inner diameter of φ500mm from a 4mm thick EPDM rubber sheet. The processing involved drilling 14 bolt holes of φ12mm on a P.C.D. of 550mm, using our water jet cutting machine to achieve high precision cutting according to the data. 【Case Overview】 ■ Material: 4mm thick EPDM rubber sheet ■ Product: Large diameter flange gasket with an outer diameter of φ600mm and an inner diameter of φ500mm ■ Processing details: Drilling 14 bolt holes of φ12mm on a P.C.D. of 550mm *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a case where we manufactured a cylindrical cover with an outer diameter of φ216mm and a height of 48mm from a 3mm thick EPDM rubber sheet based on the customer's drawing. First, we precisely cut the sheet to the specified dimensions using a water jet cutting machine, and then finished it into a cylindrical shape through adhesive processing. By combining cutting and adhesion, we can flexibly accommodate product shapes that are difficult to achieve through integral molding. We create CAD data based on the drawings provided by the customer and process it directly, eliminating the need for molds. Please feel free to contact us for more information. 【Case Overview】 ■ Material: 3mm thick EPDM rubber sheet ■ Product: Cylindrical cover with an outer diameter of φ216mm and a height of 48mm ■ Work Details ・ Precisely cut the sheet to the specified dimensions using a water jet cutting machine ・ Finished into a cylindrical shape through adhesive processing *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce a processing case of "V6502 Black Super" conducted by Daiko Co., Ltd. Based on the customer's drawings, we manufactured a flange gasket for 10K-50A from a 3mm thick non-asbestos joint sheet "Vulcan No. V6502 (Black Super)." It was processed into a shape with handles using a water jet cutting machine. Having handles makes it easier to handle and manage the installation of the gasket. Additionally, since the handles protrude outside the flange, it helps prevent human error by forgetting to insert the gasket. [Case Overview] - Material: Vulcan No. V6502 (Black Super) - Product: Flange gasket for 10K-50A (with handles) - Work Details: Processed into a shape with handles using a water jet cutting machine *For more details, please download the PDF or feel free to contact us.

• Processing Contract

"Leaks from the piping won't stop," "I don't know which flange or gasket to choose," "I'm struggling with the balance between cost and safety." Piping systems support factories, plants, and social infrastructure. The key to their stable operation lies in the "flanges" that connect pipes and equipment. While they may seem like simple components at first glance, choosing the wrong one can lead to production stoppages, environmental pollution, and even serious accidents. This article comprehensively explains everything from the basic knowledge of flanges to practical selection points for all individuals involved in the design and maintenance of piping systems, including engineers and purchasing personnel. You will learn about the differences in types and standards, the seat shape that affects sealing performance, and most importantly, how to select the right gasket. By reading this article, you will understand it all. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

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In piping flanges of plants and factories, completely preventing fluid leakage is an absolute requirement for safe operation and stable production. To fully utilize the performance of the "gasket," which can be considered the heart of the system, it is essential not only to select the appropriate material for the product but also to choose the right type of flange and implement proper tightening management based on scientific evidence. In this article, we will thoroughly explain specialized knowledge from gasket selection to processing and installation based on technical materials from Nichias Corporation, in a way that can be practically applied on-site. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.

• Other machine elements

In chemical plants and lines handling corrosive fluids, the selection of seals is the most critical issue that affects the safety and lifespan of equipment. Among them, the "fluororesin (PTFE) gasket," which boasts excellent chemical resistance, is an indispensable component. However, to fully leverage its high performance, a deep understanding of the product's structure and extremely precise selection tailored to the usage conditions are required. This article comprehensively explains the complex selection methods, processing, and usage precautions, focusing particularly on the "TOMBO No.9010 Naflon PTFE cushion gasket," which has a wide variety of combinations, based on technical materials from Nichias Corporation. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

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In plants where reliable sealing performance is required under harsh conditions such as high temperature and high pressure, "vortex gaskets" (spiral gaskets) are one of the most trusted sealing materials. However, to maximize their high performance, it is essential to have a deep understanding of the product's structure and to make extremely precise selections tailored to the usage conditions. This article comprehensively explains the correct selection methods from the complex product system of vortex gaskets, as well as precautions to prevent troubles, based on technical materials from Nichias Corporation. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

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Special and harsh environments that cannot be addressed by standard gaskets, such as high temperatures exceeding 450°C, extreme low temperatures, or highly oxidative fluids. The sealing performance under such conditions is a critical issue that affects the safety and productivity of the plant. Careless product selection can lead to immediate leakage accidents. In this article, based on technical materials from Nichias Corporation, we will thoroughly explain the correct selection methods for vortex gaskets and metal gaskets in special environments, as well as important points to maximize their performance. *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

"Joint sheets (gaskets)" are widely used in piping systems of factories and plants. Due to their versatility and cost-effectiveness, they are commonly adopted in many sites. However, to fully utilize their performance and prevent leakage issues, it is essential to correctly understand the product's characteristics and to select and handle them appropriately according to the usage conditions. In this article, based on technical materials from Nichias Corporation, we will thoroughly explain the correct way to choose joint sheets, focusing on the representative TOMBO No.1995 (Clinsil Brown), as well as important precautions that must be observed on-site. *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

Pure fluoropolymer (PTFE) gaskets are widely used in many chemical lines due to their excellent chemical resistance. However, conventional PTFE sheets have a significant challenge: they are prone to "creep (stress relaxation)" and lack long-term sealing stability. To overcome this weakness, Nichias Corporation has developed the "TOMBO No.9096-SGM" (SGM gasket) using special manufacturing technology. This article thoroughly explains the performance of this "high-strength stretched PTFE gasket," which overturns the conventional wisdom of PTFE, as well as important considerations to maximize its capabilities. We aim to assist field engineers and maintenance personnel in solving sealing challenges under more severe conditions. *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

"In the utility line of the factory, which gasket is standard and highly reliable?" "I want to select sealing materials that offer excellent cost performance against water and oil." The product that truly meets these basic needs on site and can be called a "standard" is the general-purpose joint sheet gasket "Vulcan No. 6500," provided by Vulcan Corporation for many years. In this article, based solely on the official catalog information provided by Vulcan, we will thoroughly explain why No. 6500 continues to be chosen as a standard product in many workplaces, from its basic performance to the important precautions that must be strictly followed for safe use, from a professional perspective. *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

"In standard joint sheets, deterioration due to heat and steam occurs quickly." "I want higher reliability against corrosive fluids." Responding to such voices from the field is Nichias Corporation's proud high-grade joint sheet gasket, "TOMBO No.1120 (Clean Seal Top)." In this article, based on technical materials from Nichias, we will thoroughly explain why No.1120 is chosen under harsh conditions, the secrets of its excellent performance, the correct selection and usage methods, and how it accommodates special 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.

• Sealing

"We are troubled by the rapid deterioration of the gaskets in the steam line. With standard joint sheets, hardening due to hot water occurs quickly, necessitating frequent replacements." To address these on-site challenges, Nichias Corporation has developed the steam-resistant reinforced joint sheet gasket "TOMBO No.1993 (Clinsil Super)." In this article, based on technical materials from Nichias, we will thoroughly explain why No.1993 is suitable for steam lines, the secrets behind its excellent performance, the correct selection and usage methods, and how to accommodate special processing. *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