O-rings are disc or donut-shaped gaskets which can be used in dynamic or static applications. They are also referred to as packing joints. The seal compresses between the two machinery components and prevents the loss of fluid or gas. The rings are easily manufactured, relatively cheap, and dependable, making them the most common seals used in machinery worldwide. Read More…
O-Ring SealsO-ring seals are the air and water tight connectors placed between two pieces of machinery. The round elastomeric O-ring sits in a gland, which is a groove in the metal part designed as a cavity to keep the O-ring in place.
Since 1989, we have been an o-ring distributor. We offer commercial, FDA, military, metric o-rings, caps, plugs, gaskets & more. Custom, rubber o-rings, metal o-rings, diaphragms, face seals and non-standard o-rings are also offered.
A leading o-ring manufacturer of quality metric seals for industries worldwide, defines Allied Metrics Seals & Fasteners. We offer FDA-approved elastomers, Teflon® seals, o-rings & much more. Choose from o-ring sizes, metal & plastic o-rings, o-ring kits, o-ring seals, silicone o-rings, EPDM o-rings, static o-rings, etc. Call/visit our website for more information about our products & services!
RD Rubber Technology Corp is an ISO 9001:2015 / AS9100:2016 certified and ITAR registered company. We offer compression, transfer, injection and Liquid Injection molding, rubber to metal bonding, engineering support, tooling design, machining and more. Our customers rely on us to give them the best possible production o-rings. From aerospace to medical, food processing to military applications we ...
Ace Seal, a Global Supplier of O-Rings, Seals, Gaskets and Custom Molded Rubber Products. Our Global Manufacturing capabilities allow us to offer YOU the very best quality, price and lead time available in the industry. For more information about our quality products, please call today!
Sealing Specialties Inc. specializes in standard and advanced seal components to handle applications covering all market segments. Our focus is to be a complete partner while exceeding our customer’s needs and expectations. We have high expectations of ourselves as we aim to bring a professional and knowledge based approach to solve the most demanding applications our customers may be...
O-rings seal through a mechanical deformation that creates a barrier through which a fluid may leak. They are inserted into a groove between two surfaces or molded to one surface to be sealed.
The rings are made of rubber, letting them compensate for any dimensional variations in the mating parts. When tightly secured, the seals form a water and airtight barrier, which blocks leakages and escaping of contents from in between the joined parts.
Types of O-Ring Seals
O-rings are a common part of many day-to-day applications.
Nitrile O-rings are a general type of O-rings. They offer a fairly respectable temperature range of -58 °F to 248 °F (-50 °C to 120 °C), with a high tensile strength that resists tears and damage.
Silicone rings can withstand higher temperatures than nitrile rings, ranging from -148 °F to 572 °F (-100 °C to 300 °C). They offer greater flexibility and are ideally used in water and steam because of their toughness. However, this type is prone to tear and abrasion damage.
Viton O-rings are also known as FKM O-rings and are manufactured from fluorocarbons. They have a greater resistance to temperatures ranging from -40 °F to 482 °F (-40 °C to 250 °C). These types of rings are ideal in acidic conditions and other fluids.
These rings have a coating of fluorinated ethylene propylene and offer numerous advantages over standard rings. They are capable of handling temperatures as low as -76 °F and as high as 500 °F (-60 °C to 260 °C). They also offer greater elasticity and low friction capabilities.
This O-ring encapsulates perfluoro alkoxy and is an attractive alternative to PEP and PTFE rings. It is ideal for petrochemical and acidic fluids. In addition, they can withstand temperatures higher than 482 °F (250 °C). Because of this, PFA rings are commonly used in the food sector and pharmaceutical organizations.
USP Class VI O-Rings
USP stands for United States Pharmacopeia. These USP rings have achieved a Class VI certification. They have been subjected to testing procedures to assess consistency, quality, and strength so that they are safe to use in scenarios where human life is at stake.
Vulcanized O-rings are made by treating a parent material with sulfur at elevated temperatures and splicing its ends to create a donut shape. This facilitates a reduced cost of production and large-scale production.
Large O-rings are made from the process of vulcanization; the process can be done with alterations to the ring diameter. Basic O-rings are made with a diameter of 1 inch (25.4 mm). Other variations can be made in the thickness of the material.
Applications of O-Rings
The automotive industry uses O-rings in passenger vehicles and aerospace products that undergo extreme conditions. The rings are also used when chemical exposure, rampant vibrations, and very high temperatures are common. In the medical field, the rings are used in syringes, pumps, filters, and connectors.
O-rings are also used in common applications where fluids are transmitted from one medium to another. Industrially, O-rings are used in valves, fittings, gas pumps, dispensers, and storage tanks that require sealing solutions. In the electronic industry, the O-rings are particularly used in semiconductor processing and to ensure dust protection in consumer electronics.
Benefits of O-Rings
O-rings have a wide range of benefits. They are suitable for various forms of sealing machinery, be they static or dynamic parts. The rings are also suitable for materials with standard dimensions and grooves for assured interchangeability. O-Rings are best at sealing media that transmit oils, gasses, and chemicals (acidic or alkaline). Finally, they have a simple design with a compact structure and a convenient assembly and disassembly mechanism.
Choosing the Correct O-Ring Seal Supplier
To ensure you have the most beneficial outcome when purchasing O-ring seals from an O-ring seal supplier, it is important to compare several companies using our directory of O-ring seal suppliers. Each O-ring seal supplier has a business profile page highlighting their areas of experience and capabilities, along with a contact form to directly communicate with the supplier for more information or request a quote. Review each O-ring seal business website using our patented website previewer to quickly learn what each company specializes in. Then, use our simple RFQ form to contact multiple O-ring seal companies with the same form.
O-Ring Seals Informational Video
O-Rings Power Pages
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