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This section provides an overview for o-rings as well as their applications and principles. Also, please take a look at the list of 60 o-ring manufacturers and their company rankings. Here are the top-ranked o-ring companies as of December, 2024: 1.O-Rings, Inc., 2.Apple Rubber Products Inc., 3.Trim-Lok, Inc.
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Postdoctoral researcher, conducting research on the production of cathode composite particles for solid-state batteries in the Equipment Engineering Group of Osaka Prefecture University.
Belongs to the Resource and Energy Recycling Laboratory, Nagaoka University of Technology, and conducts research on the development of DDR-type zeolite membranes for CO2 separation and the capture of CO2 from digestion gas generated from sewage treatment plants.
https://researchmap.jp/eiji-hayakawa
Thesis
https://doi.org/10.3390/membranes11080623
http://www.ijcea.org/index.php?m=content&c=index&a=show&catid=109&id=1177
https://www.sciencedirect.com/science/article/abs/pii/S1387181119305529?via%3Dihub
https://www.sciencedirect.com/science/article/abs/pii/S138358661833154X?via%3Dihub
An O-ring is a seal used to prevent leakage of fluid from a pipe or other object. It is so called because its cross section is circular and shaped like the letter O.
Since it is compressed by the parts to be sealed, the most commonly used materials include are rubber, silicon, or other elastic materials. Although used in the same way as gaskets and packing, O-rings are widely used in various places because of their ease of use, ease of maintenance such as removal, and low cost.
O-rings are used as sealing materials to prevent leakage of fluid from pipes and other components. They are also used to prevent gases from entering equipment that requires a high vacuum, such as electron microscopes.
O-rings require a groove for the ring in order to be used. This is because the O-ring needs to be compressed in order to seal, allowing it to deform into the proper shape and to apply the proper pressure.
Also, unlike gaskets and packing, O-rings can be used for both fixing and operating. In such cases, it is important to select an O-ring with the appropriate hardness for the location of use.
O-rings are deformed through compression to close the gap at the sealing area, and they achieve a seal through the repulsive force generated by this compression. Therefore, an O-ring is fitted into a groove for installation. When the O-ring is compressed and pressure is applied, it deforms toward the direction that it protrudes from the groove. Therefore, if the groove is too large, the O-ring will protrude from the member, and deterioration will begin at that point, eventually causing the seal to lose its sealing function.
Also, when fluid pressure increases, the pressure pushes the O-ring out, and the sealing function deteriorates due to overhang. Backup rings can be used to prevent O-ring protrusion. It is recommended that backup rings be used when the fluid pressure is 6.9 MPa or higher.
In addition, when compressing an O-ring with a member of the part to be used, the groove depth should be determined considering the compressing allowance to ensure sealing due to deformation. The appropriate groove depth and O-ring thickness (cross-sectional diameter) can be easily selected by referring to the JIS standard, which specifies groove dimensions so that the compression ratio of the O-ring is approximately 8 to 30% of its thickness.
The JIS standard also specifies the material and hardness of the O-ring, depending on the type and application of the O-ring.
The following are examples of materials used for O-rings:
This is the most common material used for O-rings. It has excellent oil and abrasion resistance and stable heat resistance. It is used in general industrial machinery. However, among NBRs, performance is further subdivided according to material numbers in JIS and ISO standards, so it is necessary to check the standards before selecting the appropriate material.
This material has excellent heat resistance and oil resistance. Depending on the material number, some materials have excellent resistance to acids and alkalis, and are widely used in equipment that handles chemical solutions. It may also be used in high-pressure equipment or low-temperature equipment. Compared to NBR, it is more expensive. As with NBR, the performance of FFKM is also divided by material number, so it is necessary to check the specifications and applications before deciding on the material.
FFKM (Perfluoroelastomer) is a material with excellent heat resistance and the best chemical resistance among synthetic rubbers. Commonly known as Perfluoro. This material is less likely to cause swelling of O-rings due to chemicals. The price is more expensive than FKM, and depending on the size, it is surprisingly priced at around 10,000~/piece. This material is used in cases where leakage of hazardous materials must be prevented.
Various O-rings are produced and sold by major manufacturers. When selecting an O-ring, make an appropriate selection while ensuring uniformity in terms of past performance and inventory management.
There are various standards for O-rings, some of which are introduced here.
O-rings that are used most frequently are indicated as P-000, G-000, V-000, etc. The initial letters of each have the following meanings and are used according to the purpose of use.
Used as O-rings for exercise and fixation.
Used as O-rings for fixing.
Used as O-rings for vacuum.
Each of these can be identified by its wire diameter. Each standard has a corresponding table, so it is necessary to check the table when selecting an O-ring.
*Including some distributors, etc.
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Precision Brand Products, Inc., established in 1946 and headquartered in Downers Grove, Illinois, USA, is a manufacturer of fabricated metal products. The company has expanded its product line from the original 30 items to over 3,500 products. Its extensive product line encompasses various items like feeler gages, blackeners, construction shims, punch and die sets, and plastic wedges. It also offers arbor spacers, threaded rods, tool wraps, and keystocks. Its facility is ISO 9001 certified and assuraes that every product from the company conforms to the specification published.
Atlantic Rubber Company, Inc. is headquartered in Littleton, Massachusetts. The ISO 9001-certified company is a manufacturer of precision rubber and plastic products, serving the industrial, military, pharmaceutical, and commercial markets with application design, advanced manufacturing procedures, and quality control. The company manufactures with most available plastic and rubber compounds including Latex, PVC, Nylon, pure gum, and EPDM. The company’s product line includes rubber tubing, standard and custom rubber O-rings, lab products, rubber grommets, and molded rubber products.
ifm efector (ifm) is a subsidiary of ifm electronic, founded in Germany in 1969. ifm has developed, manufactured and marketed sensors and controls technology to industries that include assembly and robotics, automotive, material handling, metal forming, mobile equipment, plastics, and food and beverage. Ifm produces sensors, condition monitoring equipment, image processing, safety technology, industrial communication, IO-link, systems for mobile machines, displays, software, connection technology, voltage supplies, as well as other accessories.
Trim-Lok, Inc, founded in Buena Park, CA, in 1977 is a manufacturer of f PVC push on edge trim, trim seals and EPDM rubber seals. The company's product portfolio includes Rubber Extrusion, Plastic Extrusion, Edge Trims, Plastic Profiles and Rubber Profiles. The company serves markets including Medical and Healthcare, Aerospace and Defense, Consumer Goods, Industrial Manufacturing and Chemical and Petrochemicals. The company provides services such as Product Selection Guidance, Engineering Support, and Custom Manufacturing.
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.
MicroStrain is based in Williston, Vermont, and is an American manufacturer of inertial and wireless sensors originally established in 1987 before being acquired by HBK in 2019. The company produces various industrial and tactical-grade sensors, wireless sensor network devices, and data analysis software. Its products include battery powered wireless 3-axis accelerometers with a rugged and weather-proofed shell, cloud-based platforms for sensor data management or analysis, and software for wireless sensor network control purposes. The company's products are mainly used by clients in the aerospace, automation, and construction industries.
Huyett, established in 1906 and headquartered in Houston, Texas, is an ISO 9001:2015 certified manufacturer of industrial fasteners and related products. The company offers an array of pins like cotter pins and spring pins, retaining rings such as external and internal rings, key stock in shapes like square and hexagonal, various types of grease fittings, and a range of O-rings including buna-n, viton, and silicone varieties. These components serve diverse applications in securing, aligning, transmitting torque, reducing friction, and sealing against leakage in machinery and structures.
Vanguard Products Corporation is headquartered in Danbury Connecticut. The company is an ISO 9001:2015 certified full-service manufacturing and engineering company providing the industry with precision elastomeric fabricated goods, producing all custom and standard goods in the United States. The company offers custom rubber and silicone products, as well as standard products including food-grade silicone tubing, rubber tubing, and fabricated EMI and RFI shielding products. The company also offers a materials configurator for customers to design with their own materials based on preference for qualities and resistance to various elements.
Apple Rubber Products Inc. was established in 1971 and is a manufacturer of O-rings, rubber seals, and custom sealing devices. The company is headquartered in Lancaster, New York. Its products are used in various industries including aerospace, automotive, and medical. Some of the company's products include O-rings, medical seals, custom molded shapes, composite seals, filter seals, and more. These products are used by a wide range of customers in the commercial and industrial sectors. Additionally, the company provides services that can custom design and manufacture sealing devices to meet the specific needs of its customers.
O-Rings, Inc., a manufacturer of sealing solutions is a company based in the USA. The company was founded in 1958 and has more than 125 markets worldwide. Its product portfolio includes caps, hydraulic seals, cords, O-Rings, grips, and more. These products are equipped to provide sealing solutions that withstand the challenges of various industries. The company's products are found in various industries such as automotive, air & gas, medical, military, fluid power, and more.
Seal & Design Inc. is a sealing products manufacturer established in Clarence, New York since 1989, and present accross the US and Canada through its three divisions. The company's product line offers items for numerous types of sealing applications, including but not limited to gaskets, o-rings, seals, molded products, die-cut foams, and more. Its products are used in the Medical, Aerospace, Electronics, Power Generation, and other industries. In addition, the venture counts with multiple standard quotas, including the C0021493-IS12, C0393417, C0034953-IS7, and C0270071-IS3 certificates.
UC Components, Inc. was established in 1974 in Morgan Hill, California, USA and it is a manufacturer of vacuum application tools. The company manufactures products such as screws, washers, nuts, o-rings, prototyping, and custom parts. It also provides services like custom cleaning, custom bagging and labeling, parts recycling and vacuum baking with RGA certification. The company is ISO 9001 certified and has a management system certified by Lucideon. The company's products are applicable in semiconductor optics, the medical field, vacuum processing, research and education, aerospace and food processing.
CAPLUGS is a manufacturer and distributor of protective solutions. The company is founded in 2005 and is based in New York, United States. The company product lineup includes plastic caps, plugs, netting, tubing, and masking devices, designed to prevent damage, contamination, and moisture ingress. The company caters to diverse industries including automotive, aerospace, electronics, medical, and more. The company offers an extensive range of protective solutions to safeguard critical components during manufacturing, shipping, and storage.
Ellsworth Adhesives was founded in 1974 and based in Germantown, Wisconsin. Ellsworth is a global distributor specializing in the supply of logistics of specialty chemicals and equipment. Industries that Ellsworth serves include battery, defense, general industry, medical, power, and transportation. Ellsworth provides services such as custom formulation, custom packaging, meter, mix, and dispensing equipment, as well as inventory solutions. Product categories include adhesives, conformal coatings, dispensing equipment supplies, encapsulates, sealants, and UV curing equipment.
Boca Bearing Company, established in 1987 and headquartered in Boynton Beach, Florida, operates as a distributor, manufacturer, and designer of ball bearings. Its product range includes ceramic balls, utilized for its durability and resistance to harsh environments, ceramic hybrid bearings that combine ceramic rolling elements with steel races, full ceramic bearings made entirely of ceramic material, and medical bearings. The company has over 8000 different bearings and well over 10 million bearings in stock.
Seal Science Inc. (SSI), a subsidiary of Rubbercraft, is an American manufacturer established in 1992 and based in Long Beach, California, producing components for sealing applications. The company's products include fabric and rubber aircraft seals, polytetrafluoroethylene (PTFE)/Teflon seals, and electromagnetic interference (EMI) conductive gaskets and seals. It also provides various types of seals, such as hydraulic, pneumatic, and rod models. Certified with ISO 9001:2015, the company has been one of the United States government's aerospace and defense subcontractors for over thirty years. It also serves customers in the semiconductor, medical, and various industrial sectors.
Qosina Corp., established in 1980 by Stuart Herskovitz, supplier of OEM medical device components to the medical, pharmaceutical, and bioprocessing industries headquartered in Ronkonkoma, New York. Their product portfolio includes sterilization supplies, needles, guide wire & catheter accessories, containers, and single-use sensors used in different applications including urology, vascular access, neuraxial, bloodline, cardiology, and respiratory. The company is ISO 9001, ISO 14001, ISO 13485, ISO 45001, and ISO 22301 certified and offers brands such as Merit Advance, Nordson Medical, NRFIT, OETIKER, and SMARTSITE.
Highlight Tech. Corporation, established in Tainan City, in 1977 is a manufacturer engaged in vacuum valves, gate vales and vacuum components for ultra-high vacuum environment process engineers. The company's product range includes LED, Touch flat panel display, semiconductor, optoelectronics technology and film vacuum coating. The company has service locations in Taiwan, China and worldwide representatives in Europe, Asia, The USA and Australia. In 2022 the company entered the Chinese market by selling the equipment of Thin-film Photovoltaic, developed by HTC.
Elite Gomma International S.r.l., founded in 1999, is a manufacturer of rubber products based in Reggio Emilia, Italy. The company’s manufacturing facility, equipped with compression, deburring, and injection machines supplied by ENGEL Austria GmbH, produces a range of standard and custom rubber items. These include protection bellows (cone, cylindrical, and rectangular), shock absorbers, and shock absorber feet. Other products include grommets (cylindrical and symmetrical), painting caps (conic, square, and round), and vibration dampers. It also manufactures flat gaskets, floating balls, and rubber frictions. The company serves various sectors, including automotive, agriculture, and water treatment.
Precision Polymer Engineering Ltd. is based in Lancashire, England, United Kingdom, and is a manufacturer of rubber molding and elastomer seals that was established in 1975 before becoming a part of the IDEX Sealing Solutions group of companies. The company’s product lineup includes various sealing solutions such as X-rings, O-rings, and T-seals. These can be fabricated from a range of elastomer materials including Kimura, Detectaseal, and Perlast. It also offers component designing services for unique projects. The company’s products are commonly used in industrial processing, such as in chemical refining and wastewater treatment operations.
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.
CN SEALS CO., LTD, founded in 1993 in Taipei, Taiwan, is a manufacturer specializing in seals, vacuum products, and packings. The company produces wide range of products, including O-rings, X-rings, vacuum pads, vacuum cups, pneumatic seals, hydraulic seals, and pump parts. CN SEALS CO., LTD holds ISO 9001:2015 certification and complies with Reach and ROHS regulations. It also adhere to international standards such as ASTM, DIN, BS, JIS, and SAE. The company's products find applications in various industries, including the oil and gas, food processing, and chemical.
Yingko Rubber Enterprise Co., Ltd., a company founded in 1988, based in Taichung, Taiwan, is a manufacturer of rubber and silicone products. It manufactures products like shock absorbers, buffer pads, and antimicrobial silicone. Its products are used in electronics, medical, petrochemical, and automotive industries. Each manufactured product is made of rubber and silicone that comply with the National Bureau of Environmental Protection standards and RoHS regulations. It also adheres to regulations approved by Taiwan Accreditation Foundation, American Material Norm, Germany Material Norm, and Japan Material Norm. In addition, the company obtained ISO 9001:2015 for manufacture of silicone and rubber products.
Polypipe was established in 2000 and is headquartered in Doncaster, England, as a manufacturer, developer, and producer of plastics and sustainable solutions. The product portfolio of the company includes Polypipe Polyguard Coil 25mm, Polypipe Cap/Plug 25mm, Polypipe Adaptor 25mm, and Polypipe Reducer 32mm, among others. It also offers terrain drainage, water supply, ventilation, water management solutions, and underfloor heating. The products are utilized to ensure the supplying of clean and safe potable water supplies in areas with contaminated land. The company caters to the building services, civils and green urbanization, homeownership and self-build, and housing markets.
Freudenberg-NOK is a manufacturer of various types of sealing products, which was established in 1849 and is headquartered in Weinheim, Germany. The company fabricates clamp seals, dairy couplings, radial shaft seals, V-ring seals and deflectors, and rod seals. It also manufactures precision-molded parts, butterfly valve seals, hydraulic accumulators, and stuffing box packings. Its clamp seals’ dimensions are standardized according to DIN 32676. Its radial shaft seals have friction-optimized designs to decrease fuel consumption, which leads to reductions in CO2 emissions.
Best-Maker Industry Co. Ltd., established in 1988 and headquartered in Shenzhen, Guangdong, China, is a manufacturer of industrial rubber and plastic components. The company's products include rubber O-rings, seals, and grommets. It also produces gaskets, bumpers, and oil seals. It primarily serves original equipment and original design manufacturers with parts and tool design, production and assembly services, and international logistics. The company has notable clients that include Volkswagen, General Motors, and Mercedes Benz.
Kemtron Ltd., founded in 1980 and currently a subsidiary of TE Connectivity, is a British manufacturer headquartered in Braintree, Essex, producing valves and fluid control equipment. The company's valve range includes ball, butterfly, and check valves. It also offers other variants including control, needle, and safety relief valves. In addition, the company produces manual, electric, and pneumatic actuators to operate valves. Pipe fittings, like flanges, elbows, and couplings, are also available for fluid handling systems. These products find applications in various fields, including food and beverage production, chemical and pharmaceutical processing, and water treatment plants.
Rezingom S.R.L. is a manufacturer of rubber gaskets and seals established in 2007 and located in Castelli Calepio, Italy. The company’s products include gaskets customized for a range of connectors, and application-specific rubber seals including for automotive assemblies and piping systems. It also offers o-rings in different sizes and materials for standard industrial applications. The company is ISO 9001 and ISO/TS 16949-certified, and chiefly serves clients in the industrial processing and manufacturing sectors.
OAV Air Bearing, founded in 1964 and headquartered in Princeton, New Jersey, is a manufacturer specializing in standard and custom air bearings and motion systems. The company's product range includes air bushings, air thrust bearings, air bearing slides, air bearing stages, and air bearing spindles. These products find utility across industries such as aerospace, automotive, semiconductor, medical, and machine tools for precise and frictionless movement, supporting applications that demand elevated levels of accuracy, smooth motion, and reduced wear and tear.
Omniseal Solutions is based in Garden Grove, California, USA, and is a manufacturer of wear control and sealing products for the industrial sectors that was originally established as Furon in 1955. The company’s products include various electron-beam physical vapor deposition (EBPVD) materials, such as ingots. These are for incorporation into seals made with polytetrafluoroethylene (PTFE) and other plastic or rubber compound products. The company chiefly serves clients in the aerospace, automotive, and energy sectors.
National Rubber Corporation is a custom manufacturer specializing in the production of rubber molded parts and components founded in 1997 and located in Canonsburg, Pennsylvania, USA. The company offers a range of capabilities including custom compression and transfer molding, die-cutting of materials such as styrene butadiene and nitrile rubber, and secondary fabrication services such as corner molding. It also offers custom extrusion for the production of components including weather strippings and o-rings. The company mainly serves clients in the automobile, construction, and food and beverage industries.
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.
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.
MBK Tape Solutions was founded in 1971 and currently operates out of Chatsworth, California under the Boyd Corporation umbrella. MBK is an ISO 9001-2015 certified manufacturer and fabricator of adhesive tape and flexible material that offers bonding, surface protection, sealing, and thermal management solutions. The company specializes in the healthcare, electronics, and industrial industries. The company offers several customer services including die cutting, printing, sheeting, and packaging. In addition, the company offers product development, cleanroom manufacturing, and contract manufacturing to customers.
W M Berg, founded in 1967 and based in Cudahy, Wisconsin, is a manufacturer and supplier of precision industrial parts. The company delivers ISO 9001:2015 certified products and services, including assemblies, bearings, belts & chains, couplings & shafts, gears, fasteners & hardware, pulleys & sprockets and more. W M Berg provides designing, developing, manufacturing and testing facilities to its clients in the aerospace, medical and motion control industries. Its distributors include Applied Industrial Technology and Motion Industries.
Hallite Seals International Limited, established in 1903 and headquartered in Middlesex, England, is a manufacturer of premium seals, wipers, and bearings for the fluid power industry. The company’s products include rod seals, single and double-acting piston seals, and static seals. Its rod seals prevent leakage from hydraulic cylinders, and single and double-acting piston seals are designed to maintain fluid pressure within cylinders. The company provides sealing technologies for construction, mining, and industrial machinery industries. Its materials range from armorlene PTFE to elastomers, and it also provides CAD, design information, and fluid compatibility guidance services.
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.
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.
Air Water Mach Inc., established in 1962 and headquartered in Matsumoto, Nagano, Japan, is a manufacturer of sealing materials and industrial plastic products. Its product line includes O-rings, cylinder packings, precision rubber products, oil seals, and gaskets, serving diverse industries such as pharmaceuticals, food, machinery, petrochemicals, and semiconductors. The company also maintains factories in Dalian, China, and holds ISO 9001:2000 and ISO 14001:2004 certifications for its adherence to quality and environmental standards.
INABA RUBBER CO.,LTD, established in 1963 and headquartered in Nishiku, Japan, is a manufacturer specializing in various rubber products. Its product catalog includes O-rings, precision rubber balls, the Elastomer pressure conductive sensor (Inastomer), precision molded rubber items, and Petan cushions. These rubber solutions find applications across diverse industries such as automotive, aerospace, electronics, and medical. It plays a crucial role in sealing, cushioning, and safeguarding components in a array of applications, highlighting its significance in enhancing performance and quality in various sectors.
Trelleborg Sealing Solutions is based in Sweden and was established in 1952 under the name Polymer Sealing Solutions until it officially got its name in 2007, known as a manufacturer and supplier of precision seals, bearings, and tailor-made polymer components. The company also develops and produces silicon, thermoplastic, PTFE, and elastomer technologies, including composite ones for various automotive, medical, aerospace, and general applications. The company maintains a global presence, with a worldwide network of manufacturing facilities, research and development centers, and sales offices to provide localized support, rapid product delivery, and tailored solutions to customers worldwide.
Best Ring Industrial Corp. is a manufacturer and supplier of rubber seals and O-rings since 1981. The company is based in Taiwan and has two manufacturing facilities in Taiwan and China. The company offers a wide range of sealing solutions including gamma seals, end caps, rubber-to-metal bonding, rubber cords, o-rings, v-rings, and more. With decades of experience, the company has honed its expertise in creating products that provide to the efficiency and performance of machinery and equipment. Its seals are commonly used in industries such as automotive, industrial manufacturing, hydraulic systems, oil & gas, and more.
Kurt J. Lesker Company was founded in 1954 and is a manufacturer and distributor of vacuum equipments based in Jefferson Hills, Pennsylvania, United States. The company manufactures various vacuum products such as vacuum chambers, vacuum pumps, pressure measuring devices, polymer coatings, and thin film deposition systems. The products are used in various fields such as decorative coatings, aerospace, electronics, optics, and LED. The company has obtained the ISO 9001 standard certificate.
APSOparts, launched in 2008 in Zurich, Switzerland, is a manufacturer and supplier of complex engineering solutions for small to large businesses in Europe. The company offers solutions for sealing, engineering plastics, fluid handling, anti-vibration, and drive technology. It makes products, such as adhesive tapes, corrugated hoses, timing pulleys, round bars, and threading sealings. Its services include supply chain and logistics, product finders, DirectUP order upload, DirectUP product configurator, and 3D CAD files.
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.
Essentra Components is a producer of plastic injection moulded, vinyl dip moulded, and metal components, operating in 29 countries across 4 continents. Essentra Component has a catalog of over 45,000 products. These range from caps, plugs, wire & cable management, flange protection, knobs, handles & grips, access hardware, PCB, and electronics hardware. Essentra Component offers free samples of CADs of standard parts for assist customers in creating custom-manufacture red solutions, including prototyping and 3D printing.
Princess Auto Ltd., founded in 1933 and based in Winnipeg, Canada, is a supplier of an assortment of tools and equipment with over 50 stores across Canada. In 1977, it opened its first store in Edmonton, Alberta, and became a retailer. The company serves several workers, including inventors, farmers, and tradespeople and stocks products such as outdoor power equipment, hand tools, and hydraulics. It sells items from several brands, such as Dealer’s Choice, Braber Equipment, and King Canada, and it also has a foundation that provides financial assistance to trades students enrolled at Canadian colleges.
TR Fastenings Ltd. is part of Trifast plc, established in 1973, is a global distributor of industrial fasteners and components, based in the United Kingdom. The company caters to automotive, electronics, and general manufacturing sectors. They supply components to over 5,000 companies globally across a wide range of industries, blending their global manufacturing capability, with strong distribution and logistic support, creates a winning combination. Their Group consists of 34 locations within the UK, Asia, Europe and the USA including 7 high volume sites manufacturing cold forged fasteners and special parts and 3 technical and innovation centres.
Rabourdin SAS, established in 1926 and headquartered in Centre, France, is a distributor that specializes in the fields of mold, cutting, stamping, and special screws. The company offers a variety of products, including shoulder bolts, ejector pins, and accessories for molds. It also offers sprue bushings with dowel pin fixing, which are mechanical parts used in injection molding. Its product enhanced surface hardness to improve wear and corrosion resistance through tenifer nitriding. It serves a diverse range of industries, including mold and die, machinery, fastening, lifting, and more.
TFC Europe Ltd, founded in the UK in 1981, is a supplier of engineering fastener products. The company offers an extensive selection of bolts and nuts in various sizes, materials, and grades to accommodate different mechanical and construction projects, a diverse range of screws, including machine screws, wood screws, self-tapping screws, and concrete anchors and wall anchors, designed to securely fasten objects to various surfaces. It has ISO 9001:2015 and Aerospace AS9100d & AS9120 certifications.
Hansa-Flex AG, established in 1962 and headquartered in Bremen, Germany, is a supplier of fluid technology solutions specializing in hydraulic components and services. The company’s products include hoses, pipes, and hydraulic components, providing solutions from prototype development to series production and system optimization. It also offers hydraulic hose management, mobile rapid service within an hour and industrial hose line inspection. Its services cover logistical solutions, hydraulic repairs, and cylinder and preventive maintenance. The company also offers planning and consulting to engineering, assembly, and training services.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | O-Rings, Inc. |
7.0%
|
| 2 | Apple Rubber Products Inc. |
6.7%
|
| 3 | Trim-Lok, Inc |
4.9%
|
| 4 | YINGKO RUBBER ENTERPRISE CO.,LTD |
4.6%
|
| 5 | CN SEALS CO., LTD. |
3.9%
|
| 6 | Vanguard Products Corporation |
3.9%
|
| 7 | Seal & Design Inc. |
3.6%
|
| 8 | Atlantic Rubber Company, Inc |
3.4%
|
| 9 | Trelleborg Sealing Solution |
3.4%
|
| 10 | UC Components, Inc. |
3.1%
|
Derivation Method
The ranking is calculated based on the click share within the o-ring 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
|
19 | 63.3% |
|
United Kingdom
|
4 | 13.3% |
|
Taiwan
|
3 | 10.0% |
|
Japan
|
2 | 6.7% |
|
Italy
|
1 | 3.3% |
|
France
|
1 | 3.3% |
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Last viewed: 1 day ago
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■Summary A product that mainly seals oil and various fluids from the rotating shaft and dust from the outside. Oil seals are used in the rotating p...
Kyowa Seal Industry Co., Ltd.
300+ people viewing
Last viewed: 2 hours ago
Standard Response
5.0 Company Review
■O-ring O-rings have been our main product since our founding, and have made remarkable advances in high-tech fields such as computers, aircraft, a...
10 models listed
Maruwa Co., Ltd.
510+ people viewing
Last viewed: 1 hour ago
Very Fast Response
The O -ring material requires the characteristics such as small compression permanent strain, excellent abrasion resistance, and excellent heat res...
10 models listed
Green, Tweed & Company Japan Co., Ltd.
30+ people viewing
Last viewed: 1 day ago
Chemraz® is ideal for the most demanding applications including semiconductor, energy, industrial, pharmaceutical, aerospace and defense. ■Feature...
Tagami Seal Co., Ltd.
80+ people viewing
Last viewed: 6 hours ago
■Features Exzeus B401BK is a heat-resistant grade designed to maintain optimal sealing performance under special high-temperature and harsh environ...
Musashi Oil Seal Industry Co., Ltd.
40+ people viewing
Fast Response
■Summary A ring-shaped packing with a circular cross section that can be selected from a wide range of sizes and rubber materials. An O-ring is a s...
Kyowa Seal Industry Co., Ltd.
310+ people viewing
Last viewed: 15 hours ago
Standard Response
5.0 Company Review
■O-ring O-rings have been our main product since our founding, and have made remarkable advances in high-tech fields such as computers, aircraft, a...
10 models listed
Tagami Seal Co., Ltd.
60+ people viewing
Last viewed: 1 day ago
■Features Exzeus A495BK is a heat-resistant grade of FFKM (perflo) material. It has excellent compression set for a long time in a high temperature...
Kyowa Seal Industry Co., Ltd.
310+ people viewing
Last viewed: 9 hours ago
Standard Response
5.0 Company Review
■O-ring O-rings have been our main product since our founding, and have made remarkable advances in high-tech fields such as computers, aircraft, a...
10 models listed
Tagami Seal Co., Ltd.
70+ people viewing
Last viewed: 1 day ago
■Features Exzeus A402BK has excellent chemical, oil, and solvent resistance, and like other FFKM (perfluoroelastomers), it is resistant to a variet...
Musashi Oil Seal Industry Co., Ltd.
40+ people viewing
Last viewed: 10 hours ago
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■Summary A sealed lid that prevents foreign objects from entering from the outside and oil leaking from the inside. A seal cap, like an oil seal, i...
Sepac Industrial Co., Ltd.
220+ people viewing
Last viewed: 1 day ago
6 models listed
Kyowa Seal Industry Co., Ltd.
270+ people viewing
Last viewed: 1 day ago
Standard Response
5.0 Company Review
■O-ring O-rings have been our main product since our founding, and have made remarkable advances in high-tech fields such as computers, aircraft, a...
10 models listed
Tagami Seal Co., Ltd.
60+ people viewing
Last viewed: 15 hours ago
■Features Exzeus A301BK is a cost-effective grade that exhibits good chemical resistance against amines. It also exhibits excellent performance aga...
Kyowa Seal Industry Co., Ltd.
280+ people viewing
Last viewed: 14 hours ago
Standard Response
5.0 Company Review
■O-ring O-rings have been our main product since our founding, and have made remarkable advances in high-tech fields such as computers, aircraft, a...
10 models listed
Nitto Shoji Co., Ltd.
240+ people viewing
We design various sealing materials such as O-rings, gaskets, and packing according to the application, and supply them to a wide range of applicat...
Tagami Seal Co., Ltd.
50+ people viewing
Last viewed: 5 hours ago
■Features Exzeus A200BK has superior steam resistance, oil resistance, and chemical resistance compared to ordinary fluororubber materials, and can...
Musashi Oil Seal Industry Co., Ltd.
40+ people viewing
Last viewed: 21 hours ago
Fast Response
■Summary A rotary seal suitable for environments that cannot be handled with rubber. M-Flon Seal is a seal that uses M-Flon® (tetrafluoroethylene r...
Kyowa Seal Industry Co., Ltd.
1540+ people viewing
Last viewed: 10 hours ago
Standard Response
5.0 Company Review
■X-ring The X-ring consists of four lip seals with an X-shaped cross section and can be used and handled in much the same way as an O-ring. In addi...
10 models listed
Tamaki Manufacturing Co., Ltd.
80+ people viewing
Last viewed: 13 hours ago
■Summary The packing is not plate-shaped but rather thick and circular, ensuring better airtightness.
2 models listed
Tagami Seal Co., Ltd.
70+ people viewing
Last viewed: 1 day ago
■Features While high-performance materials such as perfluorinated materials (FFKM) are useful for a wide variety of applications, they are generall...
Kyowa Seal Industry Co., Ltd.
360+ people viewing
Last viewed: 7 hours ago
Standard Response
5.0 Company Review
■X-ring The X-ring consists of four lip seals with an X-shaped cross section and can be used and handled in much the same way as an O-ring. In addi...
10 models listed
Tamaki Manufacturing Co., Ltd.
60+ people viewing
■Summary The packing is not plate-shaped but rather thick and circular, ensuring better airtightness.
Tagami Seal Co., Ltd.
60+ people viewing
Last viewed: 2 hours ago
■Features Although fluororubber has excellent chemical and heat resistance, it has disadvantages such as poor abrasion resistance and non-stick pro...
Technetics Group
20+ people viewing
Last viewed: 1 day ago
■Cross-sectional diameter and wall thickness considering the design tightening pressure. Basic type and high pressure balanced type are available. ...
Nisshin Sangyo Co., Ltd.
100+ people viewing
Last viewed: 23 hours ago
Very Fast Response
This is an O-ring for Scupper A-11.
