ダイコー List of Products and Services

We would like to introduce our "PTFE-based gaskets" that we handle. Our lineup includes gasket materials made from punched PTFE, "PTFE cushions" that feature a PTFE outer layer and a core material with excellent elasticity and flexibility, such as joint sheets or heat-resistant millboards. Additionally, we also offer "filled PTFE" and "glass-filled PTFE." Please feel free to contact us when you need assistance. 【Product Lineup】 ■ PTFE ■ PTFE Cushion ■ Filled PTFE ■ Glass-filled PTFE *For more details, please download the PDF or feel free to contact us.

• Sealing

The "D7000" is a PTFE cushion gasket that features a PTFE outer layer and uses joint sheets and heat-resistant millboard with excellent elasticity and flexibility for the core material. Thanks to the stable corrosion resistance of PTFE, it demonstrates excellent resistance to a wide range of chemicals, including corrosive fluids such as acids and alkalis, as well as organic solvents. It also possesses excellent electrical insulation properties, making it suitable for use as an insulating gasket for corrosion-resistant piping. 【Features】 ■ Excellent chemical resistance, usable with a wide variety of chemical liquids ■ Usable across a wide temperature range from low to high temperatures ■ Cushioned with high sealing performance ■ Improved creep phenomenon and stress relaxation at high temperatures, ensuring stable sealing performance *For more details, please download the PDF or feel free to contact us.

• Sealing

We would like to introduce our "Semi-Metal Gasket." It can be used under high temperature and high pressure conditions similar to metal gaskets while demonstrating excellent sealing performance. We offer the "Nippon Gasket Vortex Gasket" and the metal-based "Vulcan Spiral Gasket," which has been developed based on a rational design for high temperature and high pressure flange sealing materials. Please feel free to contact us when you need assistance. 【Nippon Gasket Vortex Gasket Lineup】 ■T1834R-NA Series ■T1834R-GR Series ■T9090 Series *For more details, please download the PDF or feel free to contact us.

• Sealing

The "D1000" is a high-performance semi-metallic gasket rationally designed for use in high-temperature and high-pressure environments. It possesses rich elasticity and allows for control of the tightening amount during installation. It is widely used in various fields, including thermal and nuclear power plants, steam piping on steam turbine ships, as well as process lines and thermal oil lines in petroleum refining and petrochemical plants. 【Product Lineup】 ■ Type with metal protective inner and outer rings ■ Type with metal protective outer ring ■ Basic type without metal protection *For more details, please download the PDF or feel free to contact us.

• Sealing

"D4000" is a gasket material that has a long-standing high performance record in Europe, where non-asbestos materials have been advanced, and can be used over a wide temperature range from high to extremely low temperatures. Expanded graphite is a material obtained by treating high-purity graphite crystals with chemicals and then heat-treating them at high temperatures. By inserting stainless steel plates (SUS316) into the core material, it becomes a gasket with excellent mechanical strength. 【Features】 ■ Excellent heat resistance and chemical resistance ■ Sealing performance and chemical resistance comparable to asbestos joint sheets ■ Excellent corrosion resistance ■ Wide temperature range from high to extremely low temperatures ■ Excellent compressibility *For more details, please download the PDF or feel free to contact us.

• Sealing

We would like to introduce our "Joint Sheets for Steam Piping." We offer a black sheet gasket "Nichi-as T1120," which is primarily made of expanded graphite and reinforced with aramid fibers, completely free of asbestos, as well as "Nichi-as T1155," which is mainly made of PTFE and has minimal degradation at high temperatures. Additionally, we handle "Nichi-as T1133," which is primarily made of PTFE and alumina, and "Vulcan GF300," which contains no rubber at all. 【Nichi-as T1120 Features】 ■ Uses oil-resistant rubber as a binder ■ 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.

• joint

We would like to introduce our "General Piping Joint Sheet." We offer "Nichias T1995," which combines inorganic fibers and aramid fibers with inorganic fillers, using oil-resistant synthetic rubber as a binder, and "Vulcan V6500," a sheet-like gasket material that blends organic and inorganic fibers with a special rubber-based binder and a small amount of filler, which is then rolled and vulcanized. Please feel free to contact us when you need assistance. [Nichias T1995 Usage Range] ■ Water-based fluids: Pressure resistance 2MPa, maximum operating temperature 183℃ ■ Oil-based fluids: Pressure resistance 2MPa, maximum operating temperature 183℃ ■ Gas-based fluids: Pressure resistance 1MPa, maximum operating temperature 183℃ *For more details, please download the PDF or feel free to contact us.

• joint

"D6000" is a gasket material primarily composed of high-quality non-asbestos fibers and a synthetic rubber binder with excellent oil resistance, combined with a small amount of filler and formed through rolling and vulcanization. It can be used as an alternative material to traditional asbestos joint sheets within its applicable range. Additionally, it has passed the official testing for the suitability standard JIS S 3200-7 for plumbing fixtures. [Features] - Excellent processability, similar to asbestos joint sheets - Superior processability allows for short delivery times - Elastic and provides good fitting at the flange area *For more details, please download the PDF or feel free to contact us.

• joint

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed T1995 using materials sized to Nichias joint sheets, with a maximum size of 3810W x 3810L. Due to the large surface area of the materials, we can efficiently process the products. We can also handle large-diameter projects with short lead times, so please feel free to consult us for urgent items.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We use various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed 10 tons of rigid PVC gray. This product is used for a water treatment project and has 589 holes for water passage. Although the processing time takes a certain amount of time, we were able to process it according to the data provided. We also received requests for rubber sealing materials and were able to consolidate our suppliers.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have performed multiple processes on the V6500 3t. The shapes vary, including frames and circles, but we program the layout to minimize material loss. By reducing material waste, we can offer our customers lower costs.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We performed adhesive processing on NBR rubber with a diameter of 2325mm. While 2325mm is a large diameter, we can perform segmented processing with the water jet, allowing for production without any deviation in hole pitch. This time, we processed it into four segments, but we can accommodate the desired number of segments as well.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We use various processing machines, including one of Japan's largest water jet cutters and plotters and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed a 20-meter roll of PVC sponge. It is finished as a 20-meter material with a 1-meter splice. We process it to the specified width using a width-cutting machine. We reinforce the splice area with tape to ensure that the adhesive tape on one side does not peel off easily.

• Piping Materials

It is difficult to implement torque management for all flanges. Please refer to the following for an idea of the force generated by tightening. Guidelines for pulling force Generated force F - An adult pulling with just wrist strength → 50–100 N - An adult pulling with one arm strength → 100–200 N - An adult pulling with upper body strength → 200–400 N

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed sponge white S35. Although it is thicker at 100t, it can be processed with a water jet. If you are having trouble with thicker materials, please consult us. Test processing is also possible to check the quality of the finished product.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jet cutting machines and plotters and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have received a request for hole processing of Teflon 10t 50WX60L. The processing of Teflon will be done using a plotter and router processing machine. The cross-section of the processed product will be finished beautifully. We can also accommodate counterboring and other processing needs.

• Piping Materials

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.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We use various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have performed flange processing on 20 tons of gray PVC. At Daiko, we also process resins in addition to rubber and sponge. We have machines capable of router and plotter processing, allowing us to handle various materials such as acrylic and polycarbonate.

• Piping Materials

The spiral gasket is used for high pressure, which can cause the sealing part of the spiral gasket to buckle. As a countermeasure, the use of inner and outer rings is recommended. By using an inner ring, deformation of the sealing part at the inner diameter is prevented. ■Example of a problem 〇 Leakage occurred from the vortex, and when the flange was released, the gasket was deformed as shown in the photo. ■Possible factors 〇 The flange was class 900 (63K) or higher, resulting in a large tightening force. 〇 The flange size was large (26B or more), making the gasket body prone to disassembly. ■Countermeasures 〇 When using graphite or Teflon fillers, use inner and outer rings. 〇 If the diameter is large, use inner and outer rings.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We use various processing machines, including one of Japan's largest water jet cutting machines and plotters and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have finished an NBR round cord with a diameter of 24φ into an O-ring with an inner diameter of 1348φ. The adhesive surface has been cut on a bias to increase the bonding area. While responding to feed burning may take time, if bonding is possible, we can accommodate short delivery times.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any processing inquiries. We performed adhesive processing on neoprene sponge. We bonded and joined 6t 50W x 1000L to finish it to a length of 10M. This time, we cut the width from sheet material, but we also sell molded neoprene products. If processing from sheet material, we can produce sizes that do not require molds.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jet cutters (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed a white EPDM material with dimensions of 5t and 1320φ x 1160φ. Since the diameter is larger than the width of the raw material, we performed split processing and finished it as a single piece through adhesive processing. We are bending the adhesive joints to check the strength. White EPDM can also be used in food lines.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed a long piece of 145WX53100L. Using the water jet, we processed each part individually, and then adhered them by hand to finish it as 53100L. We marked each adhesive part and were able to complete the hole pitch according to the drawings.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have processed Teflon (PTFE) using a router. The processing of the countersink holes and the C2 beveling has been completed according to the drawings. Teflon tends to produce burrs when processed with a water jet, so we are using a router for this processing.

• Piping Materials

We would like to introduce a gasket that can be used for high temperature and high pressure lines. The spiral type gasket is a high-performance semi-metallic gasket designed for high temperature and high pressure applications. ■ Structure - It consists of alternating layers of a V-shaped metallic thin strip (hoop) and cushioning material (filler) wound in a spiral shape, with the start and end of the winding fixed by spot welding. - There are four types of shapes: basic form, with inner ring, with outer ring, and with both inner and outer rings, tailored to fit the gasket seat of the target flange. ■ Features - Due to its distinctive structure, it can be used at high temperatures and pressures similar to metal gaskets. - It has excellent sealing properties. - It maintains sealing performance even under severe conditions of thermal cycling from low to high temperatures. * DaiKo's product [D1000 Thin Spiral Gasket Graphite (Graphitic Material)] This is a product from our original brand. We also handle products from domestic manufacturers.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have performed adhesive processing on round cords. The round cords are glued together to create an O-ring shape. Unless otherwise specified, the adhesive surfaces are processed into a bias shape for bonding. By gluing in a bias shape, the adhesive surface expands, allowing for a stronger bond.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. 〇T1995 1.5t We processed a complex-shaped item. Although the shape is intricate, we were able to process it according to the drawings. CAD data is also recorded for our achievements, allowing us to handle repeat orders without changing dimensions. The finish is protected by wrapping it in air caps.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We received a request for neoprene sponge 5t 56WX130L 4-C4, with some parts having tape attached. The processing involves applying tape to the back side, but only in certain areas, not covering the entire surface. We will process it with the water jet without tape and then apply the tape to the necessary areas.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We use various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We performed film processing on supplied materials. The processing was done with a plotter at a size of t0.1, 130W x 1267.6L, 4-φ23. Marking was done using a ballpoint pen tool. Although the thickness is thin, the tolerances were finished as specified.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We performed film processing on supplied materials. The processing was done with a plotter at a size of t0.1, 130W x 1267.6L, 4-φ23. We used a ballpoint pen tool for marking. Although the thickness is thin, the tolerances were finished as specified.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed T1995 3t φ3734. We manufactured it as a single piece from a size of 9S (3810X3810). This processing maximizes the capabilities of the water jet. Due to its large size, two people were involved in the pickup.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have processed Teflon. It has been machined to the specified dimensions using a router, and the screw threads have been processed using taps. We can accommodate sizes other than M4 as we have the necessary processing tools. We also handle special processing such as counterboring and tapering, so please reach out to us.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We performed processing on a 50t stepped sponge. First, we processed the R150, and finally, we completed the stepped processing. When processing the step, we create an axis to secure the product, eliminating variations in the product's tolerances.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We use a variety of processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and presses, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have processed D4000. By incorporating SUS316 as a core material into expanded graphite, we create gaskets with excellent mechanical strength. Since SUS plates cannot be processed cleanly with a water jet, we use a plotter for this processing. Gaskets for water level gauges can be processed in various materials, including T1120, Teflon, and V7020, in addition to D4000.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed 100 tons of white sponge S35. Although it is a simple process to shape it into a donut, we cannot achieve a clean finish with a die cutter due to insufficient blade height. However, with a water jet, the processing surface can be finished vertically, eliminating the taper on the cross-section caused by die cutting.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed a 2t silicone with a diameter of 1.1φ. By adjusting the water pressure of the water jet, we were able to process it within tolerance, despite its very small size. Since it was a size that could not be processed with a die, our customer was pleased. Although it is one of Japan's largest water jets, we are also capable of processing precision parts.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have processed insulation materials. This product has an aluminum foil treatment on the surface. There are 5 items, totaling 180 sheets processed. We used a plotter for processing, and we were able to cut the fibers of the insulation material cleanly. While the main demand is for roll materials, we are also waiting for requests for processed products such as parts for machinery.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed 9096-SGM using a plotter. SGM is a gasket made of 100% PTFE, which excels in heat resistance and chemical resistance, combining strength and flexibility. It is harder than soft Teflon and has excellent sealing properties. The processing was done with a plotter, resulting in a clean finish on the processed surface.

• Piping Materials

We can process various materials such as joint sheets, rubber, sponge, resin, and metal. This document includes numerous examples of processing using "general piping sheet gaskets," "steam-compatible sheet gaskets," and "PTFE (Teflon-based) gaskets." Since we have many processing machines in-house, we can offer one-stop solutions without mold costs for products such as water jet, laser, and plotter processing based on your requirements. 【Processing Examples】 ■ Water Jet Processing ■ Adhesive Processing *For more details, please contact us or download the PDF to view.

• Contract manufacturing
• Processing Contract
• Other processing machines

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jet cutters (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We have processed a glass cloth with specifications of t1.6, φ910xφ802, P845. To improve the workability of the glass fiber, we have laminated it with a special rubber. We can also accommodate various spun products, including ceramic cloth, tape processing, and graphite-treated items.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. Are you having trouble selecting gaskets and packing? With the shift from asbestos to non-asbestos materials, it has become difficult to choose the right type. We have compiled a list of products from various manufacturers that are suitable for different fluids, and we hope you can use it as a guideline for your selection.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jet cutting machines and plotters and presses, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed polyethylene foam, which is said to be used as cushioning material. Although it has a thickness of 60T, we were able to process it using a water jet. We processed four sheets of material measuring 1000W x 2000L, which fit efficiently on the processing table, resulting in minimal material loss and allowing for quick processing.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We utilize various processing machines, including one of Japan's largest water jets (high-pressure cutting machines), plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed 33 pieces of T1120 3t 10K-750A. We used 5 sheets of material measuring 2540W x 3810L and efficiently combined them with other products for processing. Since the processing range is 4000W x 5800L, we can also arrange 2 sheets of material measuring 2540W x 3810L. We can handle large-diameter processing with short lead times, so please feel free to contact us.

• Piping Materials

Our company has been processing and selling gaskets, packing, and industrial products for over 45 years. We offer a variety of processing machines, including one of Japan's largest water jet cutting machines, plotters, and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. We processed a glass cloth frame measuring 3.2t and 262W x 920L. At Daiko, we also handle processing related to textile products, in addition to joint sheets and rubber/sponge. The glass cloth is a gasket used in exhaust fluid systems. It can be processed with a water jet, allowing for precise finishing according to the drawings.

• Piping Materials

I will explain the basics for achieving stress relaxation and stable sealing properties. ◆ What is stress relaxation? 　〇 It refers to the reduction of stress in the gasket due to the deterioration or deformation of the gasket material. A high relaxation rate makes it easier for bolts to loosen. ◆ Countermeasures 　〇 Use a thinner gasket. 　〇 Change to a material with higher heat resistance. ◆ Requirements for sealing materials 　〇 High-temperature characteristics, creep resistance, strength, etc. * The thicker the sheet, the greater the stress relaxation rate, as there are more points of structural failure (proportional to thickness and volume).

• Piping Materials