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This section provides an overview for mechanical seals as well as their applications and principles. Also, please take a look at the list of 45 mechanical seal manufacturers and their company rankings. Here are the top-ranked mechanical seal companies as of December, 2024: 1.CoorsTek, Inc., 2.SEPCO, INC., 3.Robco of America.
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1987~1991: Engaged in research on wire covering materials at Polymer Materials Laboratory.
1991~1997: Worked as a patent Engineer at Koike International Patent Office.
1997~2005 Worked as an intellectual property member at GE Yokogawa Medical System, currently working as a writer.
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Mechanical seals reduce leakage of liquids from rotating shafts. Specifically, mechanical seals are used on the rotating shafts of machinery with rotating mechanisms, such as pumps and compressors, to prevent leakage of liquids such as water and oil from the rotating shaft.
Mechanical seals use liquids and are widely used in industrial machinery, such as automobiles and industrial plants with rotating mechanisms, as well as in residential facilities.
Since each liquid has different characteristics, it is important to select the materials and mechanisms used in mechanical seals properly, according to the liquid. With proper selection, the mechanical seal can prevent leakage of hazardous liquids and help prevent environmental problems, while contributing to energy savings and improved equipment safety through efficient rotation.
The basic structure of a mechanical seal consists of a rotating ring that rotates in the direction of the axis of rotation of the rotating part of the machine and a fixed ring that does not rotate. The ring-shaped "sealing" on the rotating ring is pressed against the "floating seat" on the fixed ring to slide, forming a gap between these sliding surfaces that prevents leakage of liquid.
Because of this structure and principle, some types of mechanical seal can prevent leakage of hazardous liquids under high rotation and high pressure.
There are various types of mechanical seals, and their characteristics vary depending on the sealing characteristics of the rotating ring, mounting position, and installation method. The most common types are unbalanced, balanced, rotating, stationary, inside, and outside types.
Unbalanced and balanced types are classified according to the sealing characteristics of the rotating ring. The factor that determines the pressure by the liquid is the pressure-sensitive area (A1) on the liquid side of the sealing of the rotating ring.
If the relationship between the pressure-receiving area (A1) and the sliding area (A2) is A1 > A2, the liquid pressure directly affects the sliding surface pressure. On the other hand, when A1 < A2, the pressure from the liquid is reduced.
The ratio of A1 to A2, A1/A2, is called the balance ratio (B.V.). The unbalanced type is affected strongly by the liquid pressure when B.V. > 1, while the balanced type is affected weakly by the pressure when B.V. ≤ 1.
The rotating type is a mechanism in which the sealing rotates in synchronization with the shaft, while the stationary type is a mechanism in which the sealing is fixed and does not rotate. The rotary type can be smaller than the stationary type, but the sealing is easily deformed when rotating at high speeds, which may lead to defects.
The inside type is a mechanism in which the leaking liquid travels from the outside to the inside, while the outside type is a mechanism in which the leaking liquid travels from the inside to the outside. The inside type is characterized by improved sealing because the liquid is affected by centrifugal force.
The outside type, on the other hand, has the advantage of being less susceptible to corrosion because it can be constructed so that the liquid has less contact with the Mechanical Seal.
In addition to mechanical seals, gland packings are also useful in preventing liquid leakage from rotating parts of rotating machines. Therefore, we will explain the features, advantages and disadvantages of Mechanical Seal and Gland Packing.
Mechanical Seal
Gland Packing
Depending on the fluid used, mechanical seals and gland packings are used, but gland packings are generally used when there is no danger of leakage, such as water. On the other hand, mechanical seals are generally used when there is no danger of leakage from hazardous materials.
Gland packing is often used for equipment that uses powder in addition to fluid. However, consideration should be given when using mechanical seals for equipment that contains foreign matter in the fluid, such as wastewater, or viscous liquids, such as slurry.
If these fluids are mixed between sliding surfaces or adhered to the sliding surfaces, there is a high possibility that the sliding surfaces will be scratched and leakage will occur. In addition, if they get into and adhere to the springs that are used to press seals and mechanical seals together, the spring tracking ability may be impaired, leading to leakage in some cases.
The life of a mechanical seal depends greatly on the specifications of the machine. The fluid used, machine operating hours, number of operations, and fluid temperature are the main factors that determine the service life. Basically, the approximate service life is tentatively determined based on the past installation experience and set as a cyclic replacement, but generally, the service life is 2 years.
For those that do not have a set replacement cycle, the timing for replacement depends on the importance of the equipment, but if the amount of visual leakage increases, it is time to replace the seal. Mechanical Seals provide a non-contact seal.
Therefore, they can be used maintenance-free as long as the springs that keep the sliding surfaces even and the packings that prevent fluid intrusion do not wear out. However, consumables must be replaced periodically to prevent leakage as they deteriorate over time.
*Including some distributors, etc.
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CoorsTek, Inc., founded in 1910, is a family-run manufacturer of technical ceramic material formulations with products such as acetabular liners, baffle chambers, carbon brushes for power, focal plane array components, and precision fixed gauges used in transportation, food & beverage, electronic, chemicals, and semiconductor industries. The company in Golden, CO, USA, has research & development, custom manufacturing, and design assistance capabilities. The company's CIO- Matt Mehlbrech, was awarded the 2023 Colorado ORDIE Award for CIO of the Year.
John Crane, founded in 1917 and based in Chicago, Illinois, US, is a manufacturer of mission-critical flow control solutions for increased efficiency, emission reductions, and energy transformation. The company’s products include mechanical seals, seal support systems, seal face technologies, power transmission couplings, and bearing isolators among others. It serves a wide range of industries such as oil & gas, power generation, chemical, pharmaceutical, and polymers among others. The company also offers services like mechanical seals reliability programs, turbomachinery services, asset management solutions, and gas seal management program.
Robco of America was founded in 1923 and is based in New Caney, Texas, U.S. is a manufacturer of mechanical sealing systems & solutions, cartridge seals, and assembly seals for various industries. The company provides pumps, agitators, bead mills, heat-resistant textiles, and gaskets along with carbon graphite yarn packing systems, glass fibers, lubricants, and, greases that have applications in petrochemical, food processing, marine, cement, and, aircraft industries. They also offer custom engineering & designing, onsite technical support, mechanical & compressor seal repairing, and lapping services for fuel processing, power generation, paper manufacturing, and water & sewer sectors.
SEPCO Inc was founded in 1907 and is based in Alabama, USA is a manufacturer of fluid sealing equipment products for various industries such as petrochemical, pharmaceutical processing, water treatment, and, power generation. The company provides pump & valve packing systems, mechanical seals, bearing isolators, air seals, and gaskets that have applications in pulp & paper, aerospace, chemical processing, equipment manufacture, and ethanol & other biofuel arenas. They also offer services including plant equipment survey, engineering & design, water utilization studies, sealing failure analysis, and, field inspections for the food & beverage, marine & dredging, nuclear, and wastewater treatment sectors.
Flexaseal Engineered Seals and Systems, LLC was established in 1983 and is based in Williston, Vermont, U.S. is a manufacturer of welded metal bellow seals and systems for various industrial and commercial applications. The company provides single and dual cartridges, engineered cartridges for dry-running operations, heavy-duty slurry applications, and industry-specific sealing solutions for cryogenic and hermetic equipment. They also offer lube oil systems, barrier fluid reservoirs, primary seal monitoring systems, filtration systems, and, heat exchangers as well as services including vibration analysis, motion amplification, infrared thermography, and, oil analysis for the refinery, mining, marine, paper & pulp, and, pharmaceutical industries.
A.W. Chesterton Company is a global provider of sealing solutions for rotating equipment and has its headquarters in Groveland, Massachusettes, United States. Chesterton is a major designer and manufacturer of mechanical seals for large pumps and turbines, mixers, and cooling fans. The company's rotating equipment solutions include easy-to-install Gas seal, industrial coatings to protect metal components, lubrication programs that extend bearing life, and environmental control technology that protect sealing devices from contaminants.
Master Packing & Rubber Co., founded in 1982 and headquartered in Cedar Rapids, Iowa, is a manufacturer and supplier of seal technology solutions. The company offers mechanical packing, sealing fluids, gases, powders, and hydraulic seals. They provide custom gaskets made from different materials and designs, including metal, soft fibrous material, glass, ceramic, as well as graphite, and Teflon. Utilizing computer finite element analysis, they can assess the performance of seals under any condition to achieve maximum results. Master Packing & Rubber Company is certified to ISO 9001:2015 and AAR M-1003 standards.
Phelps Industrial Products LLC is based in Laurel, Maryland. The company is a manufacturer and fabricator of custom products for domestic and global customers from industries such as oil & gas, shipbuilding, petrochemicals, utilities, and water treatment. The company’s primary product lines revolve around standard and custom gaskets, O-rings, marine products, mechanical seals, and additional products. The company provides expansive online resources and support to assist customers in both product selection and correct product usage.
Ohio Medical Parts originated in 1910 as Ohio Chemical and Manufacturing Company in Cleveland, Ohio. Today Ohio Medical is a producer of medical air and vacuum pumping systems as well as medical suction and oxygen therapy devices. Ohio Medical services the medical device, medical gas, construction/renovation, ambulatory surgery center, industrial, and OEM solutions industries. Ohio Medical devices are manufactured in an ISO 13485 registered and FDA regulated medical device manufacturing facility. Product offerings include medical devices such as flowmeters, hoses, gas regulators, and suction regulators, as well as medical gas devices such as medical gas systems, vacuum pumps, air compressors, and medical gas accessories.
Ergoseal, Inc., established in 1989 and headquartered in Carol Stream, Illinois, USA, is a manufacturer providing sealing solutions. Their product range includes mechanical seals, lip seals, non-contacting seals, magnetic seals, and custom rubber products, serving an array of industries, including pump, compressor, blower, and rotating equipment production sectors. These seals ensure the containment of fluids, enhancing the efficiency and safety of the equipment they are used in. Ergoseal is ISO 9001:2015 certified and a member of the Fluid Sealing Association.
SealRyt Corporation, established in 2001 and headquartered in Westfield, Massachusetts, is a manufacturer of rotating shaft sealing solutions for diverse industries. The company offers SealRyt Premium Packing, designed for specific applications with emphasis on sealing performance and longevity, and SealRyt Bearing Isolators, featuring a patented stainless steel design that prevents leakage and shaft movement, safeguarding bearings from contaminants and lubricants. Additionally, its SealRyt Shaft Stabilizers enhance equipment by stabilizing shafts, minimizing vibration, wear, and friction. The product range further encompasses mechanical seals, specialty products, and customized solutions, all aimed at addressing unique challenges.
Inpro Seal, established in 1975 and based in Illinois, USA, is a manufacturer and supplier of custom-engineered seal solutions. The product portfolio of the company includes isolators, shaft solutions, air mizer shaft seals, sentinel floatable brush seals. The products are used in various application agitators, gearboxes, mixers, blenders, pumps, pillow blocks, screw conveyors, steam turbines, and motors. The company serves various industries which include chemical, food & beverage, power, paper, electric vehicles, oil, and gas.
Applied Process Equipment was founded in 1988 and is headquartered in Scottsdale, Arizona. Applied Process Equipment is a distributor of pumps, tanks, and water treatment equipment and services industries across the southwest United States including mining, power plants, waste & waste water, and other industries. Applied Process Equipment products include pumps & lift stations, fiberglass basins & steel tanks, and water treatment & arsenic removal. Water treatment pumps include metering, self-priming, slurry, ANSI, butterfly valves, screw pumps, and more.
Brownlee-Morrow Company was founded in 152 and is headquartered in Birmingham, Alabama. Brownlee-Morrow is a full-line pump and fan distributor as well as service provider serving the municipal, industrial air, liquid handling, power generation, mining, automotive, chemical, pulp and paper, primary metals, marine, and poultry industries. Brownlee-Morrow services include repair and field service, system design, and well drilling. Brownlee-Morrow’s products include air handling & control, air pollution control, fans and blowers, pumps, pump accessories, seal products, macerators, softstarters, conveyors, sludge treatment, and filtration.
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.
Sealing Specialties, Inc. established in Souderton, Pennsylvania in 1985 is a distributor of seal components that are used in automotive, chemical, communication, energy, food & beverage/ Their product range includes O-Rings, Mechanical Seals Engineered Seals, Gore Sealant Products and Perfluoroelastomers. The company has a global distribution network and provides customer service. Their products are also used in industries such as instrumentation & controls, life sciences, medical, pharmaceutical, pulp & paper, and semiconductors.
Daurex GmbH, established in 1971 and headquartered in Schermbeck, Germany, is a full-service progressive cavity pump and equipment developer, manufacturer, and supplier. The company's products include vertical, horizontal, and multiphase pumps that are designed for various liquid transfer application requirements, such as extreme volumes to media with different densities and states of aggregation. It also offers the supply of its own replacement and custom parts, as well as universal spare parts for pumps from other manufacturers. The company's services include customized client programs for pump and part repair, reserve pump storage, and rapid shipping.
EKATO HOLDING GmbH, based in Germany, has been a manufacturer and supplier of industrial agitation and mixing equipment since 1933. The company shares its expertise in manufacturing agitators, reactors, and industrial mixing systems. These products are essential components in various industries, including chemical, pharmaceutical, food and beverages, and many others, where efficient mixing and agitation are crucial for production. Additionally, the company provides complete mixing systems tailored to the specific requirements of different industries, ensuring the efficient and homogenous blending of various substances.
SUNKAIER Industrial Technology Co. Ltd. is a Chinese manufacturer of process equipment and technology established in 1999 and based in Yixing, Jiangsu. The company produces various reactors and mixing agitators, as well as polymer processing and heat transfer equipment. Aside from its products, the company offers engineering services including project planning and commissioning, installation, and maintenance. The company's products are mainly used by its clients in the petrochemical, energy, and pharmaceutical sectors.
VALQUA, LTD was established in 1932 and is based in Tokyo, Japan is a manufacturer and supplier of products made from fibers, fluorocarbon resin, rubber, and software & information equipment for various industrial applications. The company provides seal products, resin products, insulation materials, metallic bellows, and, heat-resistant glass fiber textile products, that have applications in semiconductor processing, electrical & electronic, automotive, vacuum, and food industries. They also specialize in the development and sales of their products & services in power plants, aircraft, chemicals, energy, and, communication equipment utilizing the internet including electronic commerce transactions, online consulting, and on-site engineering facilities.
GMN was founded in 1908 as a manufacturer of high-precision components and systems, in Nuremberg, Germany. Their product list includes Ball Bearings, categorized as special and standard, and ready-to-use bearing systems. The spindles manufactured by the company have applications in grinding, milling, and drilling and the freewheel clutches are available in different forms, such as sprag type and etc. They also develop non-contact seals such as the labyrinth, gap, and face seals and the Electric Drives are also part of the production which has applications in the manufacturing industry along with Aeronautics, Machine Components, and Tool and Die construction.
Eagle Industry Co., Ltd., established in 1964 with headquarters in Japan and facilities worldwide, is a manufacturer of seals and gaskets. The company's product line includes mechanical seals, gas seals, gaskets, solenoid valves, and stern tube seals. Eagle Industry Co.’s products are used in the construction, agriculture, automotive, and energy markets for many components, including air conditioning exhaust systems, drive shaft components, and engine components for vehicles. Eagle Industry Co., Ltd. also invests in the research and development of environmentally friendly products that include e-mobility and hybrid hydraulic regeneration systems that reduce fuel consumption and provide power assist for battery-powered machines.
Hutchinson Paulstra is a manufacturer of anti-vibration and acoustic products established in 1934 and is based in Paris, France. It manufactures various products, including elastomer mounts, metal mounts, flexible bushes, flexible coupling, and dynamic sealing. The company is a subsidiary of TotalEnergies and has acquired several certifications, such as ISO 9001, ISO 14001, and EN 9100. Its manufactured products are catered to the automotive, rail, aerospace, marine, and offshore sectors across Germany, the UK, France, and Spain.
White Mountain Process, LLC is a manufacturer of sanitary blending and mixing equipment established in 2008 and based in Southbridge, Massachusetts, USA. The company offers industrial agitators for industrial mixing or blending operations, sanitary mixers for aseptic mixing operations such as for pharmaceutical formulation, and mechanical seals for ensuring high purity in finished products. It also offers mixing tanks for application specific industrial processes, such as in beer brewing. The company’s products are commonly used by clients in the biopharma, food and beverage, and chemical industries.
AESSEAL, established in 1975 and headquartered in Rotherham, United Kingdom, is a designer and manufacturer of mechanical sealing solutions. The company's main products include gas seals, cartridge mechanical seals, and non-contacting bearing seals. It also produces component seals for numerous applications, elastomers, and provides various packaging options. These products are used across numerous industries and are used in automotive assemblies, food processing machines, and medical devices. The company has representative, sales, and support offices across all inhabited continents.
Trelleborg AB, a company founded in 1905 and headquartered in Trelleborg, Sweden, is a manufacturer that provides solutions for extreme cold, heat, pressure, or the tremendous power of nature. The company offers a wide range of products, including Cassette Seal CSL 1500, Pneumatic seals, O-rings, and more. It also has a shop called Seals-Shop that offers various products, such as Rod and Piston Seals. It provides rubber wear liners with synthetic rubber and chemical resistance. It has received the Excellence in Quality 2018 Award and Certificate of Merit from Hyster-Yale Group. It serves various industries, including Aerospace, Agriculture, and more.
Zucchetti SRL, founded in 1977 and headquartered in Eggenstein, Germany, is an industrial mixer and agitation process technology developer, engineer, and manufacturer. The company's standard products include large and medium-sized top-entry, dynamic in-line, and magnetic mixers that are suitable for liquid-liquid, gas-liquid, and solid-liquid mixing applications. Its products and technologies provide agitation solutions for numerous process industries: adhesive, biotechnology, and chemical processing, to name a few. The company's services include the supply of spare parts, customized maintenance programs, and ongoing technical supervision.
FTL Technology, founded in 1973 and headquartered in Leeds, England, is a manufacturer of custom-engineered sealing solutions. The company designs and produces seals, bearings, and other custom-engineered solutions for critical applications in a range of industries, including oil & gas, food, and pharmaceuticals. It also offers many resources such as case studies, white papers, and test reports of its products. The company has acquired the ISO 9001 certification for quality standard management.
Technetics Group is a sealing and critical component solutions manufacturer founded in 2006 as a subsidiary of EnPro Industries based in Columbia, South Carolina. The company offers a range of products including metal and polymer seals, rupture discs, accumulators and bellows. They also custom design polyether ether ketone (PEEK) rods, plates, disks, and other components. With 13 global manufacturing locations that offer engineering, manufacturing, testing, and prototyping services, Technetics Group serves clients in various markets including energy, life sciences, semiconductors, and aerospace.
CinchSeal, Inc. is a manufacturer of rotary shaft seals for industrial machinery established in 1994 and based in Cherry Hill, New Jersey, USA. The company primarily produces self-adjusting rotary shaft seals for industrial equipment such as ribbon blenders, paddle mixers, and screw conveyors. It also offers air as well as nitrogen purge seals for minimizing maintenance costs and product loss. The company is USDA Dairy and USDA Meat and Poultry certified, and serves clients such as BASF, Mondelez International, and Tyson Foods.
Witte Pumps, established in 1984 and headquartered in Tornesch, Germany, is a manufacturer of gear pumps. The company’s products include discharge pumps, booster pumps, and extrusion pumps featuring housings, shafts, and bearings that can be tailored to specific material requirements. It also offers modular construction kits for friction bearings, gear pumps, and axial shaft seals. Its gear pumps are designed to transport media and are available in standard configurations or custom designs. The company’s pumps are used in chemical, polymer processing, and food production industries.
Hi-Tech Seals Inc. is a manufacturer of sealing and gasket components established in 1990 and headquartered in Edmonton, Alberta, Canada. The company’s products include a wide selection of o-rings, seal kits, and gaskets. It offers products fabricated from BoKure urethane, KasPex PEEK, and RyFlor compounds. The company primarily serves clients in the oil and gas, water treatment, and aerospace sectors. It also offers custom molding services, in-house rapid prototyping, and optical measurement inspections.
Festo Corporation, established in 1925 and headquartered in Esslingen, Germany, is a supplier of automation technology and technical education and is ISO 9001, ISO 13485, and ISO14001 certified. It has around 33,000 catalog products, customized components, and ready-to-install solutions, including grippers, motors, and sensors used in industrial and process automation. The company won the German Future Award in 2010 and serves 300,000 customers worldwide, while its education division provides training solutions for 56,000 industrial companies and educational institutions. It registered €3.81 billion in the 2022 financial year and is available in around 60 countries, with 2,600 patents worldwide.
Garlock, founded in 1887 and headquartered in Palmyra, New York, is a manufacturer of sealing solutions and owns several brands, including ONE-UP, LINK-SEAL, KLOZURE, GYLON, and BLUE-GARD. Its products include valves, oil production seals, expansion joints, gaskets, and wall penetration products used in several markets, including chemical processing, nuclear, mining, pharmaceutical, and power generation. It is an Enpro company with two business segments, namely sealing technologies and hygienic technologies. Rubber Fab and the Aseptic Group are under hygienic technologies and supply products for the hygienic process, biopharmaceutical, and pharmaceutical industries.
Nippon Pillar Packing was established in 1920 and is located in Osaka, Japan is a manufacturer of fluid control seals, such as gland packing materials, gaskets, and mechanical seals, for various types of industrial equipment. The company provides fluororesin products, sliding material, and seismic isolation products along with filters, separators, and, seal units that have applications in water-purifying, chemical, railways, semiconductors, and medical industries. They have obtained certification of ISO 9001 registration and their products and services have uses in air blowers, turbines, compressors, cleaning systems, and smoke exhaust systems.
Flowserve Corporation, founded in 1790 and headquartered in Irving, Texas, is a manufacturer and supplier specializing in fluid motion and control products. The company's product portfolio includes pumps, seals, valves, energy recovery systems, and decoking systems. These products are utilized across various industries, including power generation, chemical processing, water management, oil and gas, and various general industries. The company also provides customer services, including on-site field services, solutions engineering, system assessments, repairs and maintenance, and training and development.
Nok Corporation, founded in 1941 and based in Tokyo, Japan, is a manufacturer of several products, including sealing, rubber, and electronic products, and is part of the NOK Group. The company also makes flexible printed circuits (FPC), office automation equipment, and functional membranes, serving industries such as automobile, construction machinery, and electronic equipment. In 1960, the company expanded its production by constructing plants in Kumamoto, Fujisawa, and Shizuoka, and it was listed on the Tokyo Stock Exchange in 1961. In 1979, it was the first to set up a production base in the US before any Japanese automaker.
Latty International S.A., founded in 1989, is a Spanish manufacturer based in Barcelona, Catalonia, providing sealing solutions. The company’s lineup includes braided packings, made from over 120 varieties of yards and 70 types of impregnation. It also produce single, double, and cartridge mechanical seals, including the ones designed for original equipment manufacturers (OEMs). Other products, such as valves, static seals, and fitting seals, are also available. The company further provides related tools and accessories, such as electrical gasket cutting machines, cutting tool boxes, and packing cutters. These products find applications in various industries, such as chemical, food, and water treatment.
Springer Pumps, LLC was established in 16 in Eastern Pennsylvania and isa distributor for fluid handling solutions for the food & beverage, CPI, personal care, utility, refining, power generation and industrial wastewater markets in the Northeast and Mid-Atlantic regions of the US. Springer Pumps specializes in pumps, mixers, product recovery systems, and tank cleaning components including diaphragms, metering, mixers, sumps, and accessories. Springer Pumps also offers aftermarket replacement parts, kits, mechanical seals, mixer parts, and heat exchanger parts.
AB Industrial Equipment Company (AB Industrial) is headquartered in West Chester, Pennsylvania. AB Industrial distributes and services pumps, seals, and related products. Pump categories include varieties such as centrifugal, vertical, slurry, mag-drive, sanitary, and positive displacement pumps. Seals offerings include component seals, cartridge seals, face materials, elastomers, as well as electric motors. Strainers and valves include basket strainers, auto-cleaning, non-metallic, plug valves, relief valves, and triple duty valves among other offering categories.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | CoorsTek, Inc. |
5.8%
|
| 2 | SEPCO, INC. |
5.3%
|
| 3 | Robco of America |
5.1%
|
| 4 | Ergoseal, Inc. |
4.1%
|
| 5 | Phelps Industrial Products, Inc. |
3.9%
|
| 6 | Ohio Medical LLC |
3.4%
|
| 7 | SealRyt Corporation |
3.4%
|
| 8 | Master Packing & Rubber Co. |
3.2%
|
| 9 | Waukesha Bearings Corporation |
3.1%
|
| 10 | Flexaseal Engineered Seals and Systems, LLC |
3.0%
|
Derivation Method
The ranking is calculated based on the click share within the mechanical seal page as of December 2024. 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 (%) |
|---|---|---|
|
United States of America
|
17 | 68.0% |
|
Germany
|
3 | 12.0% |
|
Japan
|
2 | 8.0% |
|
China
|
1 | 4.0% |
Spain
|
1 | 4.0% |
|
France
|
1 | 4.0% |
39 products found - Page 2
39 products - Page 2
Mechanical Concept Japan Co., Ltd.
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■Summary The MECO EP Type 3 model is a highly versatile split seal for horizontal dryers and reactors in vacuum service. EP Type 3 is a double mech...
Mechanical Concept Japan Co., Ltd.
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■Summary MECO HH Type 2 is a fully customized air-purged mechanical shaft seal. Type 2 simple adjustment clamp that tightens the HH and disassemble...
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■Summary MECO HA seals are modular mechanical shaft seals designed to fit process equipment such as: ■Main features: • Ready-made size model (main...
Mechanical Concept Japan Co., Ltd.
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■Summary MECO EP Type-1 seal models are designed for fluid, slurry, and paste applications with medium to very large shaft diameters that enter the...
