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This section provides an overview for sheet gaskets as well as their applications and principles. Also, please take a look at the list of 18 sheet gasket manufacturers and their company rankings. Here are the top-ranked sheet gasket companies as of February, 2025: 1.Powerful Global Supplies, 2.Klinger IGI Inc., 3.SealSales.com.
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1985-2014: Worked for Alstom Corporation, ABB Corporation, and Gadelius Corporation, designing Jungstrom air preheaters and mechanical design of diamond soot blowers. (ABB Corporation: https://new.abb.com/jp)
2014-2021: Worked as an engineering and project manager at Alvos Inc.
https://www.linkedin.com/in/yoichi-hiroki-92192394/
Sheet gaskets are sheet-shaped components or materials used in equipment, structures, piping, etc., to prevent internal fluids from leaking out.
Although gaskets are used for similar purposes, seat packing is a type of sheet gasket among non-metallic gaskets, and although they are called differently, they are basically the same thing. In general, there are gaskets and packing for sealing purposes, and gaskets are mainly used for "motionless" or "immobile" parts.
Gaskets are mainly used for "motionless" or "immobile" parts, whereas packing is mainly used for "moving" or "movable" parts. In this case, however, seat packing, like gasket, is used for "motionless" or "immobile" parts.
Figure 1. Sheet packing for pipe flange
Seat packing is used to maintain airtightness and sealing. Generally, manufacturers' products are shipped in large sheets, and processors and users cut or drill the sheets to the required dimensions before use.
O-rings made of rubber are well-known as gaskets. O-rings are soft, so when they are tightened and pressurized, their shape changes to increase adhesion, eliminate gaps, and suppress leaks. However, since they are made of rubber, they have drawbacks, such as breakage when over-pressurized, lack of durability, and cannot be used at high temperatures. Seat packing compensates for these disadvantages.
In the three sheet packing, the sheet material is crushed by the pressurization, but the adhesive enhances the adhesion and suppresses leakage. Since the adhesive is used instead of deforming the sheet material, the leak prevention effect is sustained. On the other hand, it is disposable and cannot be reused once used.
In addition, adhesive remains at the joints, so the adhesive must be removed cleanly the next time it is used. Another disadvantage is that if the joints are not parallel but slightly tilted, the adhesive will not stick and seal.
The joint sheet has an intermediate role between the O-ring and the three-sheet. Joint sheets seal by changing shape and have high durability, but since they are also in sheet form, they cannot seal if the joint is even slightly tilted. There is a wide variety of sealants available, and they must be selected appropriately for the situation.
There are two types of seat packing: three-seat packing and joint sheet.
Figure 2. Three-sheet packing
Three sheet packing is a sheet-type pack manufactured by ThreeBond. This packing is characterized by the fusion of solid packing and liquid packing. A sheet of high-strength fiber material is impregnated with a special viscous material, and when it is sandwiched between joint surfaces and tightened, the viscous material impregnated inside oozes to the surface and fills the minute uneven gaps on the joint surfaces, thereby enhancing sealing performance.
Therefore, leakage can be prevented with low tightening surface pressure. The viscous material impregnated into the fiber material sheet prevents leakage due to permeation by capillary action. The viscosity impregnation makes it highly flexible and provides a good fit on the joint surface.
Unlike general sheet packing and gaskets, the gap between the joint surfaces is reduced, resulting in less leakage of liquid. In particular, it has excellent resistance to oils. Three-Sheet Packing has a little decrease in thickness after being sandwiched between joint surfaces and tightened, so there is less loosening and good tightening can be maintained.
The operating temperature range and tightening surface pressure are as follows, depending on the model number
Three-Sheet packing is available in rolls of 1,000 x 25,000 mm with thicknesses ranging from 0.1 to 1.15 mm. It is cut and processed according to the shape of the flange, etc.
Figure 3. Joint sheet packing
Joint sheet packing is often referred to as joint sheet gasket, but they are basically the same thing. Joint sheet packing is a packing made by adding heat- and oil-resistant rubber as a binder to fiber sheet material, rolling and vulcanizing it, and forming it into a smooth sheet shape.
Asbestos-containing fibers were used in the past, but after the revision of the law, non-asbestos fibers and carbon fibers are now being used. Joint sheet packing is widely used for flanges and machine joint surfaces because of its versatility and processability.
As an example, the operating temperature range and tightening surface pressure are as follows, although they vary depending on the manufacturer, model number, fluid used, etc.
Joint sheet packing dimensions range from 0.41 to 3.0 mm in thickness and come in large sheets in sizes from 1,270 x 1,270 mm to 3,048 x 3,810 mm. They are cut and processed according to the flange shape and other specifications.
*Including some distributors, etc.
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KLINGER IGI is a manufacturer located in Wilsonville, Oregon, founded in 1886, offering precision material conversion capabilities. They specialize in fabricating thermal interfaces, EMI/RFI shields, gaskets, and various components for industries like aviation, aerospace, medical devices, power generation, and defense. Serving original equipment manufacturers, their products cater to highly regulated sectors such as scientific instruments and alternative energy. KLINGER IGI is an AS 9100, ISO 9001, and ITAR registered material conversion specialist.
SealSales.com, established in 2000 and based in California, United States, is a manufacturer and supplier of seals and gasket materials. The company’s product portfolio includes mechanical seals, seal-on-ring seats, gasket materials, compression packaging, packing tools, and spiral wound gaskets. They also offer customer repair services, technical support, and customized solutions with different specifications. Its products are used in multiple industries including oil, gas, coal mining, chemical, refinery, and water sectors.
Henning Gasket of Chicago, Illinois, has a 100 year history of serving industries including agriculture, power generation, transportation, construction, electronics, pharmaceutical, and food processing as a distributor for gasket materials, seal materials, gaskets, seals, and related tools. Hennig Gasket also offers gasket manufacturing, of over 30 varieties including roll and sheet gasket material, and cutting services. Custom gasket manufacturing includes many types such as paper gaskets, ceramic fiber gaskets, pipe seals, flame resistant, neoprene gaskets, and chiller gaskets.
Nichias Corporation, founded in 1896 and headquartered in Tokyo, Japan, is a manufacturer and seller of building materials, auto parts, advanced, industrial, and energy products. In 1938, it became the first Japanese company to manufacture rock wool products, and in 1952, it began making spiral wound gaskets. It aims for carbon neutrality by 2050 and is engaged in recycling rock wool product scraps from its plants and construction sites. Its manufacturing establishments in Japan and overseas have ISO 14001, and its product portfolio includes sealing materials, fluoro resin products, heat insulators, calcium silicate boards, and rubber composite gaskets.
Ningbo Sunshine Sealing Technology Co., Ltd, founded in China in 2006, is a manufacturer of industrial sealing materials. The company's product portfolio includes a diverse array of gaskets for various applications, including fluid sealing, heat resistance, and vibration damping, sealing tapes and strips are designed to provide reliable sealing and insulation solutions for a wide range of industries and customized sealing material solutions. It serves industries such as oil and gas, chemical plants, petrochemicals, mining, and electronics.
Sunpass Sealing Technology Co., Ltd, founded in China in 1979, is a manufacturer of sealing and thermal insulations. The company offers a diverse array of sealing products, including gaskets, seals, O-rings, and custom-designed solutions, and a wide selection of thermal insulation materials, including blankets, boards, and coatings, designed to enhance energy efficiency and temperature control in industrial and construction settings. It serves markets such as construction, industrial manufacturing, and automotive.
Teflex, founded in 2011 and based in Zheijiang, China, is a manufacturer and global supplier specializing in PTFE products and services, including industrial sealing and filtration components. The company’s diverse product range has grown significantly from the original gasket business to research and developing filtration materials to include Eptfe sheets, Eptfe joint sealants, and PTFE film. The company also offers metal gaskets, non-metallic gasket sheets, and gland packing. These PTFE components are necessary for demanding applications in the oil & gas, mining, chemical, and electronic industries. The company operates under ISO 9001 quality management system and holds FDA, Rosh, and Reach certifications.
Saunders, A Div. of R.S. Hughes Co. Inc., since 1959, has been a manufacturer of personalized solutions for customer-specific needs. The company offers services such as adhesive binding, complex laminating, die cutting, flexographic printing, and gasket manufacturing with capabilities such as rewinding, prototyping, sheeting, roll slitting, and precision slitting. Based in Irwindale, CA, the company is a 3M preferred converter and provides materials such as custom foams, tapes, composite materials, fabrics, and release liners.
Mitsui Chemicals Tohcello, Inc., established in 1929 and headquartered in Tokyo, Japan, is a manufacturer and supplier specializing in the development of materials, films, and sheets. The company's product portfolio includes packaging solutions, protective films, and industrial films and sheets. These products find applications in various industries, including automobile, healthcare, solar energy, food and beverage, and electronics and information technology. The company provides its products and support services across Japan and the rest of Asia, with facilities in China, Taiwan, Thailand, and Malaysia.
Suraj Metal Corporation started its operations in 1973 in Mumbai, India, as a prime manufacturer and supplier of alloy stainless and nickel products. The company is devoted to provide customers with global steel procurement services. They produce industrial goods that are durable, and have the necessary proportions. Round Bars, Forging, and Fasteners are just a few of this organization's Stainless Steel and Nickel Alloys products. They are always faithful to their ideals, which are congruent with ethical business methods.
KLINGER was established in 1886 in Gumpoldskirchen, Lower Austria, as a manufacturer and supplier of industrial sealings, fluid control systems, and fluid monitoring systems. The company's product list comprises KLINGER CNAF gaskets, KLINGER ball valves (INTEC Range), and Reflex level gauges, among others. The products provide sealing solutions for critical applications requiring chemical resistance and temperature management, precise flow control and shut-off functionality in industrial processes, and essential liquid level monitoring for safe operations. The company serves various industries, including general manufacturing, automotive, infrastructure, marine, and food and beverage.
Discount Rubber Direct is a supplier of quality rubber products based in the United States and established in 1994. The company offers customers access to premium rubber products at competitive prices. The company has consistently sourced and supplied a wide range of rubber materials, from sheets and rolls to custom-cut parts, catering to various industrial needs. Discount Rubber Direct's product portfolio encompasses a comprehensive range of rubber materials suitable for applications in manufacturing, construction, automotive, and more. The company delivers industrial rubber sheets, neoprene rubber rolls and specialty rubber products.
Harkesh Rubber Industries, founded in India is a supplier of precision sealing solutions. The company's product portfolio includes gaskets, O-rings, seals, and a wide array of sealing materials, including elastomers, thermoplastics, metals, and composites. Its products are used in automotive applications, including engines, transmissions, and other critical components, in the medical industry, ensuring the safety and reliability of medical devices and equipment. The company exports to Asia, Europe, the Middle East, and the United States of America.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Powerful Global Supplies |
18.8%
|
| 2 | Klinger IGI Inc. |
18.8%
|
| 3 | SealSales.com |
12.5%
|
| 4 | Saunders, A Div. of R.S. Hughes Co. Inc. |
12.5%
|
| 5 | San Diego Seal, Inc |
6.3%
|
| 6 | Ningbo Sunshine Sealing Technology Co., Ltd |
6.3%
|
| 7 | Suraj Metal Corporation |
6.3%
|
| 8 | Teflex Gasket Company Limited |
6.3%
|
| 9 | Hennig Gasket & Seals, Inc. |
6.3%
|
| 10 | NICHIAS Corporation |
6.3%
|
Derivation Method
The ranking is calculated based on the click share within the sheet gasket page as of February 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
5 | 35.7% |
|
United States of America
|
4 | 28.6% |
|
Japan
|
2 | 14.3% |
|
India
|
1 | 7.1% |
|
Austria
|
1 | 7.1% |
Malaysia
|
1 | 7.1% |
64 products found - Page 2
64 products - Page 2
Sowa Industries Co., Ltd.
60+ people viewing
This sheet is made by pressing graphite sheets onto the top and bottom of a thin steel plate with a core of 0.1mm to 0.2mm coated with heat-resista...
Muramatsu Co., Ltd.
60+ people viewing
Last viewed: 1 day ago
■Features ・Since the main component is expanded graphite, it has excellent heat resistance, steam resistance, and corrosion resistance. - Resistan...
Sowa Industries Co., Ltd.
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This sheet is made by pressing graphite sheets onto the top and bottom of a SUS board with a core of 0.1mm to 0.2mm coated with heat-resistant adhe...
Yamakin Co., Ltd.
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■Non-ass joint seat V#6500 It is a mixture of non-asbestos fibers and a heat-resistant, chemical-resistant rubber binder, then rolled and vulcanize...
Sowa Industries Co., Ltd.
40+ people viewing
Last viewed: 3 hours ago
A gasket tape made of glass fiber cloth coated with a heat-resistant rubber compound as a joint material. ■Features It has a high heat resistance ...
Sowa Industries Co., Ltd.
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A gasket tape made of biosoluble fiber cloth coated with a heat-resistant rubber compound as a joint material. ■Features It has a high heat resist...
Sowa Industries Co., Ltd.
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This sheet is made from special heat-resistant fibers, reinforcing materials, and oil-resistant synthetic rubber. ■Features Because it has a high ...
Nippon Jukenkyo Co., Ltd.
90+ people viewing
Last viewed: 1 day ago
■High-density packing improves airtightness and durability This is an airtight packing for the foundation and foundation when insulating the founda...
Sarashina Manufacturing Co., Ltd.
40+ people viewing
■Features ・Ensure the airtightness of the foundation and foundation, where edges can easily break ・High followability with the top of the foundat...
Toyo Tanso Co., Ltd.
140+ people viewing
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
Nippon Jukenkyo Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
■Sheet-integrated base airtight packing This is an airtight packing for the foundation and foundation when insulating the foundation. Since the bas...
Toyo Tanso Co., Ltd.
120+ people viewing
Last viewed: 13 minutes ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
Nippon Jukenkyo Co., Ltd.
100+ people viewing
■Airtight packing for base with integrated moisture-permeable waterproof sheet This is an airtight packing for the foundation and foundation when i...
House Depot Japan Co., Ltd.
40+ people viewing
Standard Response
■Highly accurate construction can be standardized by simply installing it on the foundation top plate. The base packing itself has a long design (a...
Toyo Tanso Co., Ltd.
120+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
Nippon Jukenkyo Co., Ltd.
90+ people viewing
Last viewed: 1 day ago
■Keeps the foundation and foundation airtight and stops moisture. This is an airtight packing for the foundation and foundation when insulating the...
House Depot Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Standard Response
■Used as a height adjustment material when there is a gap between the base packing L series and the base. The base packing itself has a long design...
Toyo Tanso Co., Ltd.
90+ people viewing
Last viewed: 7 hours ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
Nippon Jukenkyo Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
■Ensure airtightness around windows Ideal for airtight treatment mainly around windows. The EPDM packing maintains airtightness and follows the dry...
House Depot Japan Co., Ltd.
30+ people viewing
Standard Response
■Used as a height adjustment material when there is a gap between the base packing L series and the base. The base packing itself has a long design...
Toyo Tanso Co., Ltd.
90+ people viewing
Last viewed: 11 hours ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
Nippon Jukenkyo Co., Ltd.
70+ people viewing
Last viewed: 1 day ago
■Ensure airtightness between the 2×4 floor and wall Ideal for airtight sealing between 2x4 floors and walls. The EPDM packing maintains airtightnes...
House Depot Japan Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Standard Response
■Highly accurate construction can be standardized by simply installing it on the foundation top plate. The base packing itself has a long design (a...
Toyo Tanso Co., Ltd.
90+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
Nippon Jukenkyo Co., Ltd.
70+ people viewing
Last viewed: 1 day ago
■Ensuring airtightness between the top of the foundation and the foundation Ideal for airtight treatment between the top of the foundation and the ...
House Depot Japan Co., Ltd.
40+ people viewing
Standard Response
■Used as a height adjustment material when there is a gap between the base packing L series and the base. The base packing itself has a long design...
Toyo Tanso Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
House Depot Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Standard Response
■Used as a height adjustment material when there is a gap between the base packing L series and the base. The base packing itself has a long design...
Sowa Industries Co., Ltd.
30+ people viewing
Last viewed: 3 hours ago
■Features Suitable for harsh conditions such as high temperature/pressure, cryogenic temperatures, and thermal cycles. ■Applications Steam, cryoge...
Toyo Tanso Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Product overview Carbon sliding materials have excellent self-lubricating properties, heat resistance, and chemical resistance, so they are often ...
