Gasket Packing Q&A No. 11: Is it necessary to tighten?
Why is it necessary to tighten the gasket?
Generally, the tightening force required to seal internal fluids is indicated by Wm1 and Wm2 as specified in JIS B 8265.
- Company：ダイコー 本社
- Price：Other
gasket Product List and Ranking from 142 Manufacturers, Suppliers and Companies | IPROS GMS
Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.
gasket Manufacturer, Suppliers and Company Rankings
Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.
- ダイコー 本社 Osaka//Building materials, supplies and fixtures
- 東京興業貿易商会 本社 Tokyo//Resin/Plastic
- 甲南精工 東京営業所 Tokyo//others
- 4 アキツ 大阪支店 Osaka//Manufacturing and processing contract
- 5 USUI CO., LTD. Shizuoka//Automobiles and Transportation Equipment
gasket Product ranking
Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.
- Gasket Fluid Compatibility Table (Nippon Yakin: Vulcan Comparison Table) ダイコー 本社
- Metal gaskets usable in ultra-high vacuum and extremely low temperature environments [Samples available!] USUI CO., LTD.
- Metal gasket "U-TIGHTSEAL"
- 4 What is the difference between FF type gaskets and RF type gaskets? ダイコー 本社
- 5 Graphite-filled PTFE-impregnated carbon fiber braided packing 'KS-65' 甲南精工 東京営業所
gasket Product List
181～210 item / All 760 items
Displayed results
Daiko Tokyo Branch Processing Example No. 11 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure processing machines)!
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 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. 【Processing Example】 For a full EPDM rubber gasket, we adhered rubber sheets in an L-shape, and for the inside of the bolts, we cut round cords in half and adhered them to create a rib-like structure. Achieving precise half-cutting of the round cords is challenging, but we finished the processing with a tolerance of about 0.1 using a slitter.
- Company：ダイコー 本社
- Price：Other
" gasket comprehensive catalog + Q&A collection" *Free gift!
We will answer your questions about gaskets and packing! We will provide various reference examples, so please make use of them! A comprehensive catalog is also available as a free gift!
This catalog is a comprehensive catalog (digest version) featuring products from Daiko Co., Ltd., which manufactures and sells various types of gaskets and industrial products. Our company processes gaskets and packing using various machines, including one of Japan's largest water jet cutting machines (hydro cutting machines). We have a wide range of items, including joint sheets, rubber, sponge, and resins. We also offer our original brand non-asbestos joint sheet "D-6000" and other products tailored to domestic manufacturers such as Nichias and Bulker. Please utilize the fluid compatibility charts and necessary information for selecting piping and valves! 【Featured Products (Partial)】 ■ Non-asbestos joint sheet D-6000 ■ Graphite spiral wound gasket D-1000 ■ Teflon cushion gasket D7000 ■ SGM soft Teflon gasket ■ Rubber packing, etc. *This PDF is a digest version. If you need the full version, please feel free to contact us.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Case No. 12 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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. 【Processing Example】 〇 Neoprene rubber: We performed width cutting from a 5mm thick sheet to 7W x 10,000L. The width of 7mm is narrow compared to the 5mm material thickness, making the processing difficulty higher. We first cut at 70W and then produced 10 pieces of 7W x 10. We also performed winding simultaneously and finished with a lap wrap.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Case No. 13 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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) and plotters and press processing, to propose products to our customers. Please feel free to contact us for any inquiries regarding processing. 【Processing Examples】 We used 23mm neoprene rubber sheets to perform cutting processes such as edge beveling and recess machining. The router processing machine is specialized for gasket processing and is made in Germany, ensuring high processing accuracy and proficiency in cutting operations.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 16 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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. 【Processing Example】 We processed T1995 05t using a water jet. Although it has a small diameter and a special hole shape, we were able to process it within tolerance. We received an order for 1,100 pieces, but since the water jet allows for automatic processing, we were able to meet the desired delivery date.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 17 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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. 【Processing Example】 We processed Viton rubber with a thickness of t5. Since the hardness of the rubber is 80°, which is somewhat hard, we reduced the processing speed when using the water jet compared to regular rubber. This time, we set the speed to approximately 1000mm per minute. We also have other thicknesses of Viton rubber in stock, so please feel free to inquire.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 18 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure processing machines)!
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 (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. 【Processing Example】 We recreated a broken part from a beverage manufacturer based on the damaged component and incomplete drawings provided. Although there were some first-time processes, such as machining the seating on both sides, the finish of the cross-section was comparable to that of the original product.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 19 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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 EPDM Frame 3t 260Wx1000L 28 pieces We conducted processing at night using water jet cutting. With water jet processing, by inputting CAD data and setting the materials, it is possible to automate the processing to some extent. Although the delivery time is short, we were able to ship the order the day after it was placed.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 22 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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 multiple processes from the material T1995, 2t, 2540Wx3810L. We processed a combination of multiple ordered products and standard stock. There was minimal material loss, allowing for efficient processing. The T1995 has raw material available up to 3810Wx3810L, and processing is possible with Daiko's water jet.
- Company：ダイコー 本社
- Price：Other
Gasket Packing Q&A No.14: What is stress relaxation?
What is stress relaxation? How can stable sealing be achieved?
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).
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 23 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure processing machines)!
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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Catalog Presentation Gasket Packing Fluid Compatibility Table
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
![Water Jet Processing Case Studies [*Currently Available for Free*]](https://image.mono.ipros.com/public/product/image/38a/2000483998/IPROS16627703437701952824.png?w=280&h=280)
Water Jet Processing Case Studies [*Currently Available for Free*]
A collection of processing examples that clearly shows the materials handled! Solving issues with gaskets, rubber, and resin.
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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 28 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 30 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Case No. 31 Gasket and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure processing machines)!
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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 32 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 34 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
Gasket Packing Q&A No. 15 High-Temperature High-Pressure Line
Is there a gasket that can be used for high temperature and high pressure lines?
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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 42 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
Daiko Tokyo Branch Processing Example No. 53 Gaskets and Industrial Products!
Introducing examples of processing gaskets, packing, and industrial products! We process them using various machines, including water jets (high-pressure 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 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.
- Company：ダイコー 本社
- Price：Other
Semi-metal gasket
Ideal for piping flanges that handle high-temperature and high-pressure fluids in petroleum refining, chemicals, electricity, gas, and shipping!
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.
- Company：ダイコー 本社
- Price：Other
PTFE cushion gasket "D7000"
Since it is coated with fluororesin, it can be used with a wide range of chemical solutions!
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.
- Company：ダイコー 本社
- Price：Other
PTFE-based gasket
We also offer types that use inorganic fillers and types that use glass fiber as fillers!
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.
- Company：ダイコー 本社
- Price：Other
D packing
Compared to punched rubber sheet gaskets, it has a more stable sealing performance at lower surface pressure!
The "D Packing" we handle is a gasket made by press-molding EPDM rubber into a specific cross-sectional shape. Its structure, featuring two O-ring shaped protrusions, demonstrates excellent sealing performance even at low tightening surface pressures. It can also be used with resin flanges and resin-lined flanges. Additionally, we offer the "D Packing PTFE Coated," which is made by press-heating and molding a PTFE film onto EPDM rubber molded products to create a bonded unit. 【Specifications】 ■ Maximum operating pressure: 0.98 MPa (approximately 10 kgf/cm³) ■ Operating temperature range: -40℃ to 100℃ ■ Available sizes: - 5K: 15A to 300A - 10K: 15A to 300A *For more details, please download the PDF or feel free to contact us.
- Company：ダイコー 本社
- Price：Other
Daiko's Strength: Manufacturer and Trading Company
Providing customers with what they want, when they want it, in the way they want it, at the price they want.
Daiko Co., Ltd. has strengths unique to a manufacturer and trading company. With a rich inventory and handling of materials, we respond to customer needs with specialized knowledge, providing customers with what they want, when they want it, in the way they want it, and at the price they want. Please feel free to contact us when you need our services. 【Features】 ■ Well-equipped to meet diverse processing needs ■ Nationwide shipping and immediate delivery system ■ Responding to customer needs with specialized knowledge ■ Rich inventory and handling of materials *For more details, please download the PDF or feel free to contact us.
- Company：ダイコー 本社
- Price：Other
Daiko's Strength: Well-equipped to meet diverse processing needs.
By maximizing material efficiency to the limit, we achieve the provision of "high quality at low cost"!
Daiko Co., Ltd. is equipped with various processing facilities at its production bases to meet the diverse needs of our customers. Among these, we have installed a total of four water jet cutting machines at our Osaka headquarters and Tokyo branch, making us one of the largest in the country. The maximum processing range is W4,000 × L5,800 mm, allowing for the high-precision manufacturing of large-diameter gaskets and packing. 【Equipment Owned】 ■ Water Jet Cutting Machines ■ Press Machines ■ Plotter Cutting Machines (with router function) ■ Laser Cutting Machines *For more details, please download the PDF or feel free to contact us.
- Company：ダイコー 本社
- Price：Other
Daiko's Strength: Nationwide Shipping and Immediate Delivery System
We will respond as quickly as possible to custom-made products with specified dimensions!
Japan's top-class equipment capabilities and abundant inventory support Daiko Co., Ltd.'s immediate delivery system. Both the Osaka headquarters and Tokyo branch are integrated sales and manufacturing locations, allowing us to deliver to customers more quickly due to the presence of processing machines and inventory at both sites. Additionally, as part of our efforts to achieve short delivery times, we manage data on delivery drawings and processing achievements produced by our company, establishing a system that allows processing based on past delivery records, enabling same-day shipping at the earliest. 【Features】 ■ Japan's top-class equipment capabilities and abundant inventory ■ Integrated sales and manufacturing at both Osaka headquarters and Tokyo branch ■ Data management of delivery drawings and processing achievements produced ■ A system that allows processing based on past delivery records, enabling same-day shipping at the earliest *For more details, please download the PDF or feel free to contact us.
- Company：ダイコー 本社
- Price：Other
What is a vortex gasket (spiral-shaped gasket)?
We will also explain the correct selection methods for structure, features, materials, and shapes (presence or absence of inner and outer rings)!
The vortex gasket is an essential sealing component for the joints of piping flanges used under harsh conditions such as high temperature and high pressure, due to its excellent sealing performance and durability. The vortex gasket (spiral gasket) is made by alternately winding a thin metal strip (hoop) with a V-shaped cross-section and a soft non-metallic material (filler) that has cushioning and sealing properties. Regarding its structure and features, the metal hoop serves as the framework, providing strength and resilience to the gasket. The filler material fills the gaps, demonstrating high sealing performance. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*
- Company：ダイコー 本社
- Price：Other
