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In the longevity of plant equipment and various industrial machinery, preventing dissimilar metal contact corrosion (galvanic corrosion) that occurs at piping flanges and joints of different metals is an extremely important technical challenge. In this article, the term "electrolytic corrosion" primarily refers to this dissimilar metal contact corrosion (galvanic corrosion). It is necessary to ensure sufficient insulation resistance throughout the entire system. In the flange insulation (isolation) of this bolted connection, the core component that physically prevents contact (electrical conduction) between the bolt shaft and the inner wall of the flange is the insulated bolt sleeve (insulation bushing). In this article, our company, a specialized processing manufacturer of industrial sealing materials and insulating materials, will thoroughly compare the material characteristics of the two representative materials: "insulated mica sleeve" and "insulated PTFE sleeve." *For detailed content of the column, please refer to the related link. For more information, please download the PDF or feel free to contact us.

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In the design and maintenance of plant piping and industrial machinery, preventing "electrolysis (dissimilar metal contact corrosion, galvanic corrosion)" that occurs at points where different metals come into contact is an extremely important technical challenge to ensure the longevity and safe operation of equipment. To block the weak current (corrosion current) generated by the potential difference between metals, it is necessary to completely electrically insulate the flange fastening parts (bolts, nuts, and seating surfaces). Conventional fluororesin (PTFE) sleeves are prone to deformation due to creep (stress relaxation) in high-temperature environments, which may require consideration of reduced tightening axial force and insulation performance. In this article, our company, a specialist manufacturer of industrial sealing materials and insulating materials, will explain the material characteristics of "mica," which is suitable for high-temperature environments, the selection criteria for specific fastening parts (insulating sleeves and mica washers), strict adherence rules during installation, and the total coordination of high-temperature insulating gaskets that should be used in conjunction. *For detailed content of the column, please refer to the related link. For more information, please download the PDF or feel free to contact us.

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Boilers and pressure vessels are essential energy sources in factories and plants, as well as in various process lines. While they are extremely convenient facilities, they also carry the risk of causing serious labor accidents (major incidents) that can endanger lives, such as massive explosions or the eruption of high-temperature fluids if something goes wrong. Therefore, based on Japan's Industrial Safety and Health Act, boilers and pressure vessels are strictly categorized according to their size, capacity, and pressure. From manufacturing to installation, operation, and eventual decommissioning, a very strict inspection and certification system, along with personnel qualification requirements, are mandated by law. In this article, Daiko Co., Ltd., a specialized manufacturer of industrial sealing materials, will explain the overall picture of "safety regulations for boilers and pressure vessels, statutory inspections (lifecycle regulations), and qualification requirements." *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

Blowers, blowers, and fans operate as the "heart" of various industries, handling exhaust from industrial plants, factory air conditioning systems, and even flue gas treatment from incineration facilities and drying ovens. The "sealing materials (gaskets and packing)" used at flange and casing split surfaces (casing packing) fundamentally support the performance and safety of equipment in the manufacturing and maintenance of these devices. Blowers vary widely in their internal fluids and operating environments depending on their applications, ranging from standard sirocco fans that deliver clean air at room temperature to turbo blowers that handle high-temperature exhaust gases or combustion gases at several hundred degrees, and corrosion-resistant fans that exhaust corrosive gases. *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

Are you having trouble determining whether the bolt threads that fit 150LB (Class 150) or 300LB (Class 300) flanges in the maintenance of overseas plant equipment or in the construction of piping lines designed for oil refining and chemical plants are in metric standards or unified standards (inches)? Do you want to know the exact length of the stud bolts? In domestic plants, the JPI-7S-15 (Flanges for Petroleum Industry) standard, which is based on ASME B16.5, is widely used. While the basic dimensional system is based on ASME B16.5, there are also differences tailored to domestic operations, so it is necessary to confirm the actual specifications. Since these differ from the familiar JIS standards (10K/20K, etc.) in terms of outer diameter, P.C.D (the diameter of the circle connecting the centers of the bolt holes), and the number of bolts, if you do not confirm the exact specifications and arrange accordingly, it could lead to nonconformities on-site or leakage risks due to poor fastening. *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.*

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We would like to introduce a processing case of Nichias' vermiculite-based heat-resistant and insulating board "Vermosal Sheet No. 6750-P," adopted for electric furnaces and heat treatment equipment. The specifications include a board measuring 138W × 250L with a large center hole of φ100 and four φ15 bolt holes for fastening. Hard boards containing minerals, like Vermosal Sheet, tend to have brittle edges that can easily chip when cut with rough tools such as saws. However, by utilizing our high-precision plotter processing, we minimized burrs and chipping to an extreme degree, successfully completing the mass production of 120 pieces with high precision. [Case Overview] ■ Product Name: Vermosal Sheet High Heat-Resistant Insulating Gasket ■ Dimensions: 3.0t × 138W × 250L (Center φ100 × 1, Corner Bolt Holes φ15 × 4) ■ Material/Processing Method: Vermosal Sheet No. 6750-P (manufactured by Nichias) / Plotter Processing ■ Quantity/Application: 120 pieces / Insulating and electrical insulating gaskets for industrial furnaces, drying ovens, etc. *For more detailed information about the case, please refer to the related link. For further details, you can download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce an example of a round ring gasket using "Vulcan No. 6500," which is widely used for piping connections and sealing parts of various industrial devices. The size of φ145×φ119 is easy to handle, and a major feature is that one side is processed with adhesive tape (double-sided tape). This dramatically facilitates temporary fixing and positioning in high places, vertical flanges, or narrow areas that are difficult to reach, preventing the gasket from shifting or falling during screw tightening work. It shortens construction time on-site and significantly improves the reliability of assembly work. 【Case Overview】 ■ Product Name: Vulcan No. 6500 Round Ring Gasket with Double-Sided Tape ■ Dimensions: 2.0t×φ145 (outer diameter)×φ119 (inner diameter) ■ Material/Specification: Vulcan No. 6500 (general-purpose non-asbestos joint sheet) / bonded with adhesive tape on one side (for temporary fixing) ■ Processing Method/Quantity: Plotter processing / 30 pieces *For detailed information about the case, please refer to the related link. For more details, please download the PDF or feel free to contact us.

• Sealing

In industrial gas and high-pressure gas environments, such as filling lines for plant equipment and gas cylinders, do you have questions like "Which packing should be used for piping that carries ultra-low temperature liquid nitrogen?" or "What is 'Daiflon,' which is often specified for high-pressure gas valve seats?" In the industrial gas industry, including oxygen, nitrogen, and argon, various materials are used for pipe joints and internal valve components. Among them, "Daiflon (PCTFE)" is a representative resin material widely adopted in industrial gas facilities. In this article, our company, a specialized manufacturer of industrial sealing materials with extensive delivery experience in the industrial gas sector, will clearly explain the reasons why Daiflon is frequently used in the industrial gas and high-pressure gas industry. *For detailed content of the column, please refer to the related link. For more information, feel free to download the PDF or contact us directly.*

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In selecting sealing materials (such as resin gaskets and valve seats) for harsh environments like high-pressure gas piping and chemical lines, we often hear concerns like, "I don't really understand the difference between PTFE and PCTFE," or "I'm using PTFE fluoropolymer packing in a high-pressure environment, but it's becoming deformed and causing leaks." In facilities that handle industrial gases (such as oxygen, nitrogen, argon) or special chemicals, general-purpose rubber and plastics cannot be used. Mistakes in material selection can directly lead to equipment downtime or serious issues, so it is crucial to correctly understand the properties of engineering plastics and to use materials like valve seat materials appropriately for their intended applications. *For more details on the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

• Sealing

In the design, manufacturing, and maintenance of water treatment plants, industrial filtration equipment, or semiconductor manufacturing equipment, the selection of sealing materials (gaskets and packing) for piping connections is a crucial factor that affects the reliability of the equipment. In particular, when fastening "PVC piping (plastic flanges)" or "plastic lined flanges," which have limitations on tightening torque, standard sheet gaskets are prone to leakage due to insufficient surface pressure. Conversely, if tightened too much in an attempt to stop the leak, there is a risk that the flange itself may crack. A widely used sealing material that addresses these specific challenges of plastic flanges is the "D packing (EPDM molded packing)," which reliably stops fluids even at low surface pressures. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

• Sealing

The "union joint" and its internal sealing component, the "union gasket," play a modest yet crucial role in the maintenance of piping and the installation of equipment. Have you ever faced issues on-site such as "water leaking from the union," "not knowing the size of the union packing for old equipment," or "using a special chemical that dissolves standard rubber products"? Due to its threaded structure, the union joint requires the selection of gaskets with appropriate thickness and material; otherwise, it can lead to insufficient tightening or excessive compression, resulting in damage and leaks. In this article, Daiko Co., Ltd., a manufacturer specializing in industrial sealing materials, will thoroughly explain the "union gasket dimension quick reference table," which is immediately useful on-site, the correct material selection based on fluid type, and key points for prompt arrangements to avoid halting operations. *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.*

• Pipe Fittings

In regular repairs (scheduled maintenance) and unexpected maintenance of plants and factories, what troubles on-site personnel are the "limited short construction periods" and the "uncertainty of not knowing the exact dimensions until disassembly." What if the valve manufacturer has been discontinued, or if there are no drawings for overseas products? Delays in procurement directly lead to extended line stoppages. In this article, we will thoroughly explain how Daiko Co., Ltd., a specialized manufacturer of industrial sealing materials, addresses the challenges of component procurement in valve maintenance and dramatically smooths operations for the following fiscal years. *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.*

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Here is an example of the "EPDM white packing" used in large flange parts of food and beverage machinery. We performed circular machining with a diameter of φ600 on a rubber material with a thickness of 10mm. Thick rubber tends to have distorted cross-sections (tapering) when processed with standard cutting methods, but our water jet cutting technology achieves vertical and beautiful cutting surfaces. We use safe materials that comply with the Food Sanitation Act, and we consistently accept requests for accompanying documents such as conformity certificates as needed. 【Case Overview】 ■ Product Name: EPDM White Food Sanitation Act Compliant Packing ■ Dimensions: t10×φ600 (outer diameter)×φ550 (inner diameter) ■ Material/Specifications: EPDM White / Compliant with Food Sanitation Act, documents available ■ Processing Method: Water Jet Cutting *For more detailed information about the case, you can view it through the related links. For further details, please download the PDF or feel free to contact us.

• Processing Contract

In factories, hydraulic equipment, piping systems, and various industrial machines, "oil leaks (due to oil seal failure)" are a critical issue that can lead to serious equipment troubles, fires, and production line stoppages. To address these leaks, the key to sealing is the use of sealing components such as gaskets and packing made from "oil-resistant rubber." In this article, our company, a specialized trading firm and processing manufacturer of industrial sealing materials, will thoroughly explain the mechanism by which rubber deteriorates in oil, compare the characteristics of representative oil-resistant rubbers (such as NBR, FKM, and silicone), and provide guidance on the correct selection based on different environments. *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.

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In the design and maintenance of factory equipment, essential applications include wanting to "prevent drafts and water leaks" and needing "cushioning materials to protect precision instruments from shocks," which makes "sponge materials" indispensable. However, if one chooses a random sponge just because "it's soft for now," it can lead to failures such as water seeping in and causing leaks, or degrading due to oil and becoming worn out. In this article, Daiko Co., Ltd., a specialized manufacturer of industrial sealing materials, will thoroughly explain the differences between sponge and foam, how to distinguish between "continuous bubbles and independent bubbles" that must not be confused, and compare representative materials (such as rubber sponge, urethane, PE, etc.). *For detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us.

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"I want to create original design educational toys using sponge, but the mold costs are too high." "I would like to custom order a single store logo sign or interior decoration made of acrylic or wood." "I want to process dedicated urethane cushioning material for an attaché case to carry precision equipment." In the development of new products and the production of custom items, many designers and creators are troubled by not knowing where to request processing or by the initial costs being a barrier to product realization. In fact, our industrial cutting equipment, which manufactures gaskets and packing to prevent pipe leaks, is widely utilized in creating products across various industries such as construction, interior design, education, and advertising displays, due to its overwhelming precision and versatility. *For more details on the column, please refer to the related link. For more information, feel free to download the PDF or contact us.

• Processing Contract

We would like to introduce a case study of the "fluororesin cushion packing" used in large flanged parts of industrial equipment. For a massive ring shape exceeding an outer diameter of 900A, it was necessary to precisely arrange numerous bolt holes. We adopted water jet processing, which allows for high-precision cutting while minimizing thermal effects on the composite material, the fluororesin cushion material. With uniform hole position accuracy and excellent shape reproducibility, we achieved ease of assembly on-site and stable sealing performance. 【Case Overview】 ■ Product Name: Fluororesin Cushion Packing (Core CR) ■ Dimensions: Equivalent to 5K-900A large diameter ring (with multiple bolt holes) ■ Material/Structure: PTFE (coating layer) + CR rubber (core material) ■ Processing Method: Water Jet Processing *For detailed information about the case, please refer to the related link. For more information, feel free to download the PDF or contact us.

• Processing Contract

We would like to introduce a case study of the production of oversized O-rings used in the sealing parts of large equipment. In response to the challenge that the curing adhesion process (using molds) takes several weeks and does not meet the timeline for site restoration, we proposed our round cord adhesive processing. A 10mm diameter NBR round cord was bias cut (diagonally cut) to match the circumference length, and skilled craftsmen manually bonded it. By maximizing the adhesive surface area, we secured sufficient strength for practical use and achieved delivery in an overwhelmingly short time frame. 【Case Overview】 ■ Product Name: NBR Round Cord Adhesive O-Ring ■ Dimensions: Wire diameter 10φ × Inner diameter (ID) 621 ■ Material/Processing Method: NBR (Nitrile Rubber) / Bias cut and manual adhesive bonding ■ Application: Emergency maintenance of large equipment / Large tank sealing *For more detailed information about the case, please refer to the related links. For further details, please download the PDF or feel free to contact us.

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■Overview of Processing Example Product Name: Teflon (PTFE) Gasket (Long Hole Specification) / Dimensions: 2t × 32W × 213L P156 13×25 Long Hole-2 / This processing example features a long hole specification gasket made from PTFE material. Long holes are processed at both ends of the narrow shape to ensure positional adjustment during installation. By using water jet processing, thermal effects are minimized, achieving a high-precision finish without compromising the excellent chemical resistance of PTFE. ■Product Features PTFE (fluororesin) is a high-performance material with exceptional heat and chemical resistance. It is resistant to almost all acids, alkalis, and solvents, and has minimal leaching of impurities, making it widely used in industries that require cleanliness, such as food, pharmaceuticals, and chemical plants. It also possesses non-stick and insulating properties, making it a highly reliable resin that maintains stable performance even in harsh environments.

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■Overview of Processing Example Product Name: Teflon Thin Ring Gasket / Dimensions: Outer Diameter φ118.5 × Inner Diameter φ101.4 × Thickness 0.2t, φ4 holes × 2 (PCD110.2) / This processing example features an ultra-thin ring gasket made of PTFE (Teflon). It has a precision specification with an outer diameter tolerance of +0 to -0.2 and an inner diameter tolerance of +0.1 to 0, with two bolt holes for positioning. By adopting water jet processing, we achieved high-precision cutting without thermal deformation, even with thin plates. ■Product Features PTFE (fluororesin) is a high-performance material with exceptional heat and chemical resistance. It withstands almost all acids, alkalis, and solvents, and has minimal leaching of impurities, making it widely used in industries that require cleanliness, such as food, pharmaceuticals, and chemical plants. It also possesses non-stick and insulating properties, making it a highly reliable resin that maintains stable performance even in harsh environments.

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■Overview of Processing Example Product Name: Acrylic Signboard / Dimensions: 100W × 300L × 5t (Hole Diameter φ5 × 2 Locations) / This processing example involves the production of a display sign with the text "Test Valve" engraved on red acrylic using laser processing. The non-contact processing allows for smooth finishing of fine text, achieving high visibility with white lettering. Holes for installation were also processed simultaneously, accommodating equipment identification and guidance display purposes. ■Product Features Acrylic sheets have excellent transparency and a high light transmittance similar to glass. They are lightweight yet highly weather-resistant, making them suitable for long-term outdoor use. They also have excellent workability, allowing for complex shapes through laser cutting, engraving, and hole drilling. Additionally, they offer high flexibility in coloring and surface finishing, making them widely used in various fields such as signboards, display panels, and covers.

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■Overview of Processing Example Product Name: Irregular Gasket / Dimensions: t0.8 (285/470) + (236/470) Upper and Lower Set Irregular Product / This processing example involves the production of an irregular gasket using No. 6500 joint sheet. Due to the complex curved shapes and segmented structure specifications, water jet processing was selected. This method allows for high-precision cutting without the need for molds, enabling faithful reproduction of curved and intricate shapes, and achieving stable quality in production. ■Product Features No. 6500 is a general-purpose joint sheet primarily composed of non-asbestos fibers and heat- and oil-resistant rubber (NBR). It offers excellent economic efficiency and is compatible with a wide range of fluids, including water, oil, and air. It is commonly used as a seal for piping and equipment in various industries and complies with JIS standards for water supply, although caution is required for conditions exceeding 100°C.

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■Overview of Processing Example Product Name: Irregular Gasket / Dimensions: 106×242×190mm, Plate Thickness 1.5mm, Bolt Holes φ12×8 locations, φ8×1 location / This processing example involves the production of an irregular gasket using TOMBO No.1995. It has a complex shape combining hexagonal and square forms and is used for sealing applications in equipment. Water jet processing is employed, eliminating the need for molds, ensuring stable processing accuracy and reproducibility even for complex shapes. ■Product Features TOMBO No.1995 is a general-purpose joint sheet made by blending inorganic fibers and aramid fibers with oil-resistant rubber (NBR). It is compatible with fluids such as water, oil, and brine, and excels in a balance of processability, sealing performance, and flexibility. It is commonly used as gaskets for piping flanges and equipment in various industries.

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■Overview of Processing Example Product Name: Acrylic Plate for Viewing Window / Dimensions: 90W × 144L × 3t / This processing example involves a component for a viewing window made from transparent acrylic plate. It features six φ8 holes arranged in specific locations and R5 processing at the four corners, intended for visual confirmation of the interior of the device. This is a component for machinery and requires visibility and assembly precision. By adopting laser processing, non-contact processing is achieved, allowing for high-precision shape processing while maintaining transparency and ensuring stable quality. ■Product Features Acrylic plate (PMMA) is a thermoplastic resin with excellent transparency, possessing a high transmission rate comparable to glass while being lightweight and resistant to breaking. It also has excellent weather resistance, making it less prone to discoloration or deterioration in outdoor environments, thereby maintaining a stable appearance over long periods. It is easy to process, allowing for cutting, drilling, bending, and bonding, making it suitable for a variety of applications such as displays, covers, and protective plates.

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■Overview of Processing Example Product Name: Acrylic Plate / Dimensions: 90×64mm (Thickness 2t), φ7 holes x 4 locations, R3-4 at four corners / This processing example features a plate for mechanical parts made from transparent acrylic. It combines hole processing and R-shaped features in a rectangular shape, requiring high dimensional accuracy despite its small size. By using laser processing for non-contact machining, material deformation is minimized, achieving stable precision. ■Product Features Acrylic sheet (PMMA) is a thermoplastic resin with excellent transparency, lightweight, and resistant to breakage, boasting a high transmittance comparable to glass. It also has excellent weather resistance, making it less prone to discoloration or deterioration in outdoor environments, thus maintaining a stable appearance over a long period. Additionally, it is easy to process, allowing for cutting, drilling, bending, and bonding, making it suitable for various applications such as displays, covers, and protective plates. Its surface hardness is relatively high, resulting in a glossy and beautiful finish, which makes it widely used as a material that balances design and functionality.

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■Overview of Processing Example Product Name: Fabric-Reinforced Natural Rubber Irregular Flanged Gasket / Dimensions: 120□×3t / This processing example is an irregular flanged gasket used in industrial machinery equipment. It is a specially shaped sealing component with a plate shape of 120 square size, featuring a central hole and bolt holes, along with a flange shape. The material used is fabric-reinforced natural rubber, which balances flexibility and strength. The water jet processing allows for high-precision machining of curves and irregular shapes while minimizing thermal effects to maintain the elastic properties of the rubber. ■Product Features Natural rubber (NR) is made from the sap of rubber trees and boasts excellent mechanical strength, elasticity, and abrasion resistance. While it is strong against tearing and bending, it is inferior in oil resistance and weather resistance. Therefore, it is widely used in environments where it is not exposed to oil or direct sunlight, such as vibration-damping rubber, cushioning materials, and tires (blends).

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■Overview of Processing Example Product Name: Gasket for Rotating Equipment / Dimensions: Outer Diameter 653φ × Inner Diameter 583φ × Thickness 1.5t, Bolt Holes 13φ - 10 holes, 15φ - 2 holes / This processing example is a natural rubber gasket used in the flange connection of rotating equipment. It has an irregular shape with multiple bolt holes and positioning protrusions on the outer circumference, making it suitable for sealing applications in environments prone to vibrations and slight misalignments. By using water jet processing, it achieves dimensional accuracy and hole position accuracy without the need for a mold, ensuring stable quality even for large diameters and complex shapes. ■Product Features Natural rubber (NR) is made from the sap of rubber trees and boasts excellent mechanical strength, elasticity, and abrasion resistance. While it is strong against tearing and bending, it is inferior in oil resistance and weather resistance. Therefore, it is widely used in environments where it is not exposed to oil or direct sunlight, such as vibration-damping rubber, cushioning materials, and tires (blends).

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■Overview of Processing Example Product Name: Fluororubber Irregular Frame Gasket / Dimensions: 1.5t × 54.5W × 116.5L / This processing example is an irregular frame gasket used in industrial machinery and equipment. It features a complex contour shape that includes curves, made from fluororubber #685, utilizing its heat resistance, oil resistance, and chemical resistance. Water jet cutting was employed for processing, achieving high precision in shaping the irregular contour while minimizing thermal impact. This results in high sealing performance and reproducible quality. ■Product Features Fluororubber (FKM) is a top-tier material among synthetic rubbers. It boasts exceptional performance in heat resistance (up to 250°C), oil resistance, and chemical resistance. It can be reliably used in harsh environments, making it indispensable as a critical component in chemical plants and semiconductor manufacturing equipment; however, attention must be paid to its cold resistance and cost.

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■Overview of Processing Example Product Name: Fluororubber Small-Diameter Gasket / Dimensions: 1.5t × 26.5W × 55.5L / This processing example features a small-diameter frame-shaped gasket made from fluororubber. It is used as a sealing component inside equipment and demonstrates stable sealing performance even in harsh environments due to the excellent heat resistance, oil resistance, and chemical resistance of fluororubber. By adopting water jet processing, we achieved high-precision small-diameter machining without affecting the material with heat. ■Product Features Fluororubber (FKM) is a top-tier material in synthetic rubber. It boasts exceptional performance in heat resistance (up to 250°C), oil resistance, and chemical resistance. It is indispensable as a critical component in chemical plants and semiconductor manufacturing equipment due to its ability to be used stably in harsh environments; however, attention must be paid to its cold resistance and price.

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■Overview of Processing Example Product Name: Teflon-coated Packing (Core CR Rubber 2t) / Dimensions: 5K-900A Full Surface, Up to the Bolt Hole in the Outer Skin / This processing example is a ring-shaped packing for large diameter flanges. It features a multi-hole design with bolt holes arranged on the outer circumference, used for sealing at equipment connection points. The composite structure combines the chemical resistance of PTFE and the cushioning properties of CR rubber, providing stable sealing performance. The water jet processing minimizes thermal impact, allowing for high-precision machining of large diameter and multi-hole shapes. ■Product Features PTFE (fluororesin) is a high-performance material with exceptional heat and chemical resistance. It withstands almost all acids, alkalis, and solvents, and has minimal leaching of impurities, making it widely used in food, pharmaceuticals, and chemical plants that require contamination prevention. It also possesses non-stick and insulating properties, making it a highly reliable resin that maintains stable performance even in harsh environments.

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■Overview of Processing Example Product Name: Gasket / Dimensions: 70□×t0.8 / This processing example involves the production of a chemical and clean-type gasket using PTFE. Due to its complex shape, which includes a square hole and small diameter holes in the center, as well as multiple bolt holes on the outer perimeter, water jet processing was adopted to achieve production without the need for a mold. High positional accuracy and reproducibility are ensured even with multiple holes and complex shapes. ■Product Features PTFE (fluororesin) is a high-performance material with excellent heat and chemical resistance. It withstands almost all acids, alkalis, and solvents, and has minimal leaching of impurities, making it widely used in industries that require cleanliness, such as food, pharmaceuticals, and chemical plants. It also possesses non-stick and insulating properties, making it a highly reliable resin that maintains stable performance even in harsh environments.

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■Overview of Processing Example Product Name: Valve Surrounding Gasket / Dimensions: Outer Diameter 99φ × Thickness 0.5t, Central Hole 8φ, Bolt Holes 6.5φ × 6 Locations / This processing example features a circular gasket made from PTFE material. It is designed for use around valves, with a central hole and bolt holes arranged at six locations on the outer perimeter. High-precision hole processing was achieved through water jet cutting, without compromising the excellent chemical resistance of PTFE. Due to the non-thermal impact processing, it can be manufactured with stable quality while maintaining the material properties. ■Product Features PTFE (fluororesin) is a high-performance material with exceptional heat and chemical resistance. It withstands almost all acids, alkalis, and solvents, and has minimal leaching of impurities, making it widely used in food, pharmaceuticals, and chemical plants where contamination is a concern. It also possesses non-stick and insulating properties, making it a highly reliable resin that maintains stable performance even in harsh environments.

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■Overview of Processing Example Product Name: Uneven Width Frame Packing / Dimensions: 73W × 513L × 1.5t, Bolt Holes φ11 × 20 Locations, Long Holes with Inner R / This processing example involves the production of a PTFE gasket with an uneven width frame shape using water jet processing. High-precision machining was achieved for the complex shape, which includes long holes and multiple bolt holes, without the use of a die. It is used as a component that requires assembly compatibility and stable sealing performance in industrial equipment instrumentation applications. ■Product Features TOMBO No.9007 (Naflon PTFE Top) is a gasket molded from pure PTFE. It is resistant to almost all chemicals and can be safely used with fluids that are sensitive to contamination. It is compatible with acids, alkalis, solvents, etc., and is widely adopted in fields that require high chemical resistance and purity, such as chemical plants, food, and pharmaceutical lines.

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■Overview of Processing Example Product Name: Three-Sheet Thin Gasket / Dimensions: Outer Diameter φ135 × Inner Diameter φ100 × Thickness 0.22mm, 6-φ7 Holes (PCD116) / This processing example features a ring-shaped gasket made from an ultra-thin three-sheet with a thickness of 0.22mm. High-precision processing is achieved through water jet cutting, minimizing deformation and warping even with thin materials. Utilizing the property of the viscous material to fill in unevenness during tightening, it is adopted as a leak prevention measure for flanges in hydraulic equipment and industrial machinery. ■Product Features The three-sheet packing is a special sheet-like gasket developed by leveraging the advantages of traditional solid sheet gaskets and liquid gaskets. It exhibits excellent resistance, particularly to oils. When compressed between mating surfaces, the viscous material contained within oozes out to the surface, filling in the uneven areas and preventing leakage from the joint surface. Unlike traditional solid sheet gaskets, which rely solely on resilience to prevent leakage, this gasket provides a long-lasting leak prevention effect.

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■Overview of Processing Example Product Name: Inner Diameter Irregular Gasket / Dimensions: t0.3×225φ×170φ (Inner Diameter Irregular) P195 with R / This processing example involves the production of an inner diameter irregular gasket using Three Sheet 203S. Due to its special specification with notches in the inner diameter, water jet processing was adopted. This method allows for high-precision processing without the need for molds, accommodating complex inner diameter shapes while ensuring stable quality with minimal deformation even in thin materials. ■Product Features Three Sheet 203S is a non-asbestos joint sheet with excellent sealing properties and compression recovery, making it a versatile material that can broadly accommodate general fluids such as water, steam, and oil. It also excels in processability and is suitable for complex shapes.

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■Overview of Processing Example Product Name: Silicone Rubber Gasket / Dimensions: 4t × φ82 × φ57 / This processing example features a ring-shaped gasket made from silicone rubber with a hardness of 70°. By adopting water jet processing, we achieved high-precision cutting without thermal impact while minimizing the deformation characteristic of rubber. Utilizing the excellent heat and cold resistance of silicone rubber, it is suitable for sealing applications in equipment used in a wide range of temperature environments. ■Product Features Silicone rubber (Si) is a special rubber with silicon as its main framework. It has exceptional heat resistance (up to 200°C) and cold resistance (down to -70°C), demonstrating stable performance over a wide temperature range. It also has high weather resistance, electrical insulation properties, and safety for human contact, making it widely used as a sealing material in the food and medical fields, as well as in high-temperature environments, although its mechanical strength is relatively low.

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■Overview of Processing Example Product Name: Glass Cloth Gasket / Dimensions: 140W × 280L × 4.8t (R140・R57) with 4 holes of φ20 / This processing example is a glass cloth gasket used in equipment flange areas. Water jet processing was adopted for its complex shape, which includes R processing in a semicircular form and mounting holes. This ensures reproducibility of the curved sections and accuracy of hole positions, contributing to stable assembly. ■Product Features This gasket is made by applying natural rubber to glass cloth and shaping it into a specified form. It has excellent thermal insulation properties and is environmentally friendly as it is non-asbestos. Various processing methods, including sewing, are available, allowing for large diameter processing. It is used for high-temperature duct sealing.

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■Overview of Processing Example Product Name: V7030(N) Teflon Cushion Gasket / Dimensions: 120W × 250L × 2.8t / This processing example involves a product that has been water jet processed from a Teflon cushion gasket with a PTFE coating structure. Two circular openings with a diameter of 80mm, ten bolt holes with a diameter of 14mm, and a complex shape with rounded corners (R20) were processed with high precision. Water jet processing was selected to enable complex external shapes and multi-hole processing while maintaining the coated structure, achieving stable quality for gaskets used in corrosive fluids and food and pharmaceutical applications. ■Product Features V7030(N) is a composite gasket that has a resilient core material, such as a non-asbestos joint sheet, coated with PTFE in a V-shaped cross-section. Thanks to the excellent chemical resistance of PTFE, it can handle corrosive fluids such as acids and halogens, making it safe for use in the food and pharmaceutical sectors, which are sensitive to contamination. It is widely used for sealing pipe flanges, towers, tanks, and various equipment.

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■Overview of Processing Example Product Name: Flange Gasket / Dimensions: 3t 10K-125A Full Face / This processing example involves the production of a flange gasket using the V6500AC. A corrosion-resistant material was selected for applications requiring corrosion suppression in stainless steel piping. It features a full face shape with 8 bolt holes and is used for sealing at piping connections. Mass production with stable dimensional accuracy is achieved through press processing. ■Product Features No. 6500AC is a corrosion-resistant type that reduces soluble chlorine. It provides corrosion suppression effects when using water or aqueous solutions with stainless steel flanges. Additionally, surface treatment reduces adhesion to the flange. It is suitable for stainless steel piping and valve bonnets in various industries that require corrosion resistance.

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■Overview of Processing Example Product Name: Gasket / Dimensions: 44.2W × 67.85L × 0.8t / This processing example features a non-standard gasket made using TOMBO No. 1995. It has a complex shape combining straight lines and curves, along with a 3.5φ recessed hole, and is used for sealing applications in equipment and piping. The water jet processing allows for stable precision without thermal effects, and since no mold is required, it can flexibly accommodate prototypes and small lots. ■Product Features TOMBO No. 1995 is a general-purpose joint sheet made by blending inorganic fibers and aramid fibers with oil-resistant rubber (NBR). It is compatible with fluids such as water, oil, and brine, and excels in a balance of processability, sealing performance, and flexibility. It is commonly used as gaskets for piping flanges and equipment in various industries.

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■Overview of Processing Example Product Name: T-shaped Gasket / Dimensions: 144W × 197L × 1.5t, φ56 hole × 1, φ15 hole × 3, R3/8 / This processing example involves the production of a T-shaped gasket using TOMBO No.1995. It is designed for sealing at piping connection points and features multiple bolt holes and a central opening. The water jet processing allows for a mold-free approach, ensuring stable processing accuracy even for complex shapes. ■Product Features TOMBO No.1995 is a general-purpose joint sheet made from a blend of inorganic fibers and aramid fibers with oil-resistant rubber (NBR). It is suitable for fluids such as water, oil, and brine, and excels in the balance of processability, sealing performance, and flexibility. It is commonly used as gaskets for piping flanges and equipment in various industrial fields.

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■Overview of Processing Example Product Name: PVC Irregular C-shaped Plate with R / Dimensions: 3t × 45W × 75L R11.25 × 3 / This processing example is an irregular plate manufactured as a mounting part for cold and heat equipment. It includes specifications for C-shaped notches and R processing, aimed at avoiding interference with piping and ensuring secure fixation. Water jet processing was adopted to faithfully reproduce complex contour shapes. Since no molds are used, it allows for a quick turnaround, achieving stable quality from prototyping to mass production. ■Product Features Rigid polyvinyl chloride (PVC) is a type of polyvinyl chloride manufactured without the addition of plasticizers. This results in increased hardness and durability, making it suitable for various applications. Rigid PVC excels in weather resistance, chemical resistance, and recyclability.

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■Overview of Processing Example Product Name: MT Plate Ring Gasket / Dimensions: φ390×φ290 / This processing example features a large-diameter ring gasket used in the flange connection of equipment. The material used is MT plate, and the surface is coated with baked paint (Nippon Paint 19-70A3 semi-gloss). Plotter processing is employed for machining, allowing for high-precision processing of the large-diameter ring shape. By ensuring uniform contour accuracy, stable sealing performance during equipment assembly is achieved. ■Product Features MT Plate (stainless steel) is a plate material made from stainless steel sheets that excel in corrosion resistance and mechanical strength. It is used for partition plates, cover components, structural parts, and more in piping systems and machinery, demonstrating stable dimensional accuracy and durability. Laser processing allows for precision shapes, including multiple hole machining and irregular shape processing, making it widely adopted as components in various industrial equipment and machinery.

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■Overview of Processing Example Product Name: Color Original Concealment Plate / Dimensions: Outer Diameter 320φ × Inner Diameter 260φ / This processing example features a ring-shaped concealment plate made from MT plate (color original). Due to the requirement for exterior quality, press processing was adopted to ensure precision during punching and finishing of the edges. The uniform shape and stable dimensional accuracy allow for production with minimized quality variation even in mass production. Using color original material does not compromise the design quality, making it suitable for cover and concealment applications. ■Product Features MT plate is a sheet material with uniform thickness and stable physical properties, making it suitable for exterior applications. The color original type excels in design quality and is widely used for concealment and cover applications. It also exhibits excellent dimensional stability after processing, with minimal quality variation being a key feature.

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■Overview of Processing Example Product Name: Gasket / Dimensions: 2t × 20W × 1000L / This processing example involves the production of a long gasket using EPDM sponge (with adhesive). It is used for sealing gaps in equipment in a strip shape, requiring uniform width precision. Water jet processing ensures stable machining accuracy and reproducibility even for long lengths. ■Product Features EPDM sponge is a lightweight and flexible material made by foaming EPDM rubber. Its independent bubble structure provides excellent water resistance and thermal insulation, with high compression recovery, ensuring stable performance as a sealing material. It also excels in weather resistance and ozone resistance, making it suitable for long-term use in outdoor environments, and is widely used as a sealing material and cushioning material in the construction, equipment, and electrical fields.

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