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This section provides an overview for insert rings as well as their applications and principles. Also, please take a look at the list of 6 insert ring manufacturers and their company rankings. Here are the top-ranked insert ring companies as of April, 2026: 1.Stoody Industrial & Welding Supply, Inc., 2.Hempel Pipe & Supply, 3.Central States Industrial.
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Categories Related to Insert Rings
Insert rings are ring-shaped components utilized in hydraulic, pneumatic, water, and other fluid piping systems. They are specifically designed for insertion inside pipes and tubes to enhance the strength of seals or connections in piping and pipe connections. Insert rings play a crucial role in preventing shrinkage at the joints of tube fittings, which are components that connect tubing to fittings to ensure secure connections and prevent leakage.
These rings are versatile and come in various types tailored to their specific application within piping systems.
Insert rings find their application across different joints in piping systems, primarily to prevent fluid leakage.
These rings are integral in connecting diverse piping systems that transport liquids or gases, aiding in leak prevention.
In pressure control devices and valves, insert rings are employed at pipe connections to ensure precise pressure control and mitigate the risk of leakage or overpressurization.
They are crucial in automotive and aircraft fuel delivery systems, preventing fuel leaks at fuel line connections.
Insert rings are also pivotal in cooling systems for circulating water and fluids, where their role in preventing leaks is essential for maintaining the cooling effect.
These rings are employed in piping systems for the safe mixing of chemicals and liquids in various manufacturing processes, preventing chemical leakage.
In medical equipment and devices that use piping for the supply and drainage of liquids and gases, insert rings ensure safe operation and maintain a hygienic environment by securing the joints.
Insert rings are strategically placed between pipes or between a pipe and a fitting. Upon connecting the pipes, the fitting or compression ring secures the insert ring in place, applying pressure. This pressure deforms the insert ring's material, ensuring it tightly conforms around the connection, filling any gaps and creating a leak-proof seal.
To effectively achieve this seal, insert rings are made from elastic materials capable of exerting the necessary pressure for a secure fit and adherence to the connection surfaces.
Additionally, to combat tubing shrinkage, insert rings are used, made from materials more rigid than the tubing itself, such as metal, providing an internal support structure.
Insert rings are categorized into the following main types:
Used at pipe fitting connections, these gaskets ensure a secure link between pipes and fittings, preventing leaks.
These gaskets are specifically designed for piping joints, particularly in environments with high pressure or temperature, safeguarding against gas and liquid leaks.
A gasket placed between the valve stem and the valve body to prevent leaks during valve operation and guarantee its proper function.
These caps seal the ends of pipes to protect them from contamination and damage, particularly useful for sealing unused piping sections.
A ring that increases the diameter of a pipe to facilitate connection to a fitting, ensuring a robust connection by clamping the pipe end into the fitting.
*Including some distributors, etc.
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Robvon Backing Ring Company is a manufacturer of backing rings headquartered in Factoryville, Pennsylvania, and was founded in 1943. The company researches, develops, designs, and supplies a diverse range of products, including backing rings, conspacers, consumable inserts, machined rings and squings. Its newest invention, Squings, was designed for quick, easy alignment of square or rectangular tubing and to assure a precise, close tolerance fit-up. Its products provide solutions to welding and fabrication and are used in various sectors, including shipbuilding, oil and gas, and construction. Robvon’s Quality Assurance Program meets the requirements for ISO-9002, ASA B31.1, and ASA B31.3.
Stoody Industrial & Welding Supply, Inc. is a distributor of welding supplies and industrial gases headquartered in San Diego, California and was founded in 1921. The company’s products are available in many categories, not limited to Abrasives, Air Tools (pneumatic), Burrs and Exhausters, Carbon Arcs, and Chemicals. Its products serve industries, including manufacturing, construction, and maintenance. Stoody also offers installation and training, and a comprehensive guide on how to use its machines and tools through the “Guides and Reference Material” online page. The company is certified by NAVSEA / MSA and was recognized by Business Finance Magazines for its work.
Hempel Pipe & Supply is a distributor of industrial equipment headquartered in Davenport, Iowa and was founded in 1984. The company distributes a diverse range of product categories, including Pipe Fittings, Weld Fittings, Flanges, Pipe Nipples and Pipe and Tubing. Its products provide solutions to multiple sectors, such as construction, manufacturing, engineering, and maintenance. The company is an official distributor of big brands like Braxton Harris, ASC Engineered Solutions, Service Metal, Jomar Valve and Merit Brass. Hempel runs an online store under the name Getpipes.com, with an unlimited listings, a 4.5 Shopper Approved ratings and on-time delivery.
Central States Industrial, founded in 1977, is a distributor of sanitary processing equipment and installation material. The equipment includes valves, mixing & ingredient addition, heat exchange, filters & strainers, and corrosion-resistant supper alloys used in chemical, biotech, brewery, dairy, and pharmaceutical industries. The Springfield, MO, company provides custom equipment such as utility stations, pump carts, hot water sets, valve manifolds, and holding tubes. The company offers installation, maintenance services, fabrication, pump repair, and industrial refrigeration capabilities.
Nihon Pisco Co. Ltd., founded in 1976 and based in Nagano, Japan, is a manufacturer and distributor of pneumatic equipment and is ISO 9001 and ISO 14001 certified. The company stocks various products like valves, actuators, and vacuum accessories used in several industries, including semiconductor, medicine, and rechargeable battery. The company started selling push-in fitting for pneumatic piping in 1977 and launched the industry’s first push-in fitting built-in type speed controller in 1981. In 1993, it launched a few products, including a quick exhaust valve, a digital pressure sensor, and a vacuum generator with a digital pressure sensor.
Imperial Weld Ring Corp., established in 1959, is a manufacturer of precision metallic welding products such as weld inserts & test coupons, weld backing rings, machined weld rings, and consumable inserts used in oil & gas pipeline systems, nuclear sector, power generation sector, wall welding, and steam boiler applications. The Elizabeth, NJ, company offers precision CNC turning and machining services on metals such as stainless steel, titanium, superalloys, aluminum, and steel. The company has threading, counterboring, profiling, knurling, and countersinking capabilities.
Ranking as of April 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Stoody Industrial & Welding Supply, Inc. |
29.8%
|
| 2 | Hempel Pipe & Supply |
19.1%
|
| 3 | Central States Industrial |
19.1%
|
| 4 | Robvon Backing Ring Company |
14.9%
|
| 5 | Nihon Pisco Co., Ltd. |
10.6%
|
| 6 | Imperial Weld Ring Corp. |
6.4%
|
Derivation Method
The ranking is calculated based on the click share within the insert ring page as of April 2026. 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
|
4 | 80.0% |
|
Japan
|
1 | 20.0% |
100 products found - Page 2
100 products - Page 2
Technetics Group
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■Reduced Y of helicoflex. No loss of functionality even under positive pressure and high temperatures. The Helicoflex Beta HNR spring has special p...
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A gasket made of V-shaped metal hoops and cushioning material called filler, which are alternately layered and wrapped in a spiral shape. There is ...
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■FR metal gasket type face seal joint features ・High-purity metal-to-metal seal provides leak-free closure from vacuum to high pressure. -Precisel...
Consus Co., Ltd.
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■Features - By attaching a between gasket to the ferrule/union joint, it is possible to sandwich catch nets, etc. -Some materials and sizes are in ...
Flow Joint Co., Ltd.
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■Features ・Size: 1/16" to 2"/2mm to 50mm. ・A variety of materials and shapes can be selected. ・Reliably forms a seal using parts with high proce...
Sowa Industries Co., Ltd.
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■Features Suitable for harsh conditions such as high temperature/pressure, cryogenic temperatures, and thermal cycles. ■Applications Steam, cryoge...
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■Features - Gasket for union joints. ・Other H-type gaskets are also available.
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■Features ・Size: 1/16" to 2"/2mm to 50mm. ・A variety of materials and shapes can be selected. ・Reliably forms a seal using parts with high proce...
Technetics Group
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■Vacuum rubber O-ring Want to eliminate gas permeation and gas release. It is possible with Delta Beta HNRV. Delta Beta HNRV is a combination of De...
Muramatsu Co., Ltd.
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■Features ・A gasket with a corrugated shape that concentrates surface pressure and improves sealing performance. ・Can be processed into special s...
Technetics Group
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■It is a metal seal with elasticity. Groove, RF/FF, T&G, NW/KF, 3-end contact type, ICF/conflat, irregular shapes, and rectangular shapes are also ...
Consus Co., Ltd.
490+ people viewing
Last viewed: 18 hours ago
■Features We can also manufacture sizes other than those specified.
Flow Joint Co., Ltd.
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■Features ・Size: 1/16" to 2"/2mm to 50mm. ・A variety of materials and shapes can be selected. ・Reliably forms a seal using parts with high proce...
