The versatile O-rings have high resistance to mineral oil, grease, and hydraulic oil, among other substances. O-rings are often used in hydraulic and pneumatic systems. O-rings can be supplied in FPM/Viton material, which can be used in high-temperature applications and has good resistance to chemicals and ozone. Our range of O-rings also includes popular rubber O-rings in many dimensions.

Here you will also find our popular O-ring assortments available in various sizes from 7 to 31 millimeters. O-rings are also referred to as o rings or o-rings, but they are the same product with the same properties.

Purchase everything in our online shop, and get free shipping to the nearest Ahlsell store, which is located in all major cities.

Also see our complete range of seals, gaskets, and rubber.

 

What is an O-ring?

O-rings are seals with a round cross-section and are made from rubber, silicone, metal, and plastic materials. Depending on the material, O-rings can serve various purposes within industry and regulatory approvals and standards. The pressure, temperature, and medium are crucial for your choice of material that the O-ring is made of.

The O-ring can function as both a static and dynamic seal, and all types of O-rings have many different applications across most areas of the technical industry. Additionally, the O-ring is an important part of the sealing system in both hydraulic and pneumatic equipment.

 

O-rings are often used for sealing:

 

• Covers
• Flanges
• Caps
• Valves
• Fittings

 

When the O-ring is subjected to tightening and pressure, its shape is altered to fill the O-ring groove and gaps. This way, you achieve a secure seal that prevents the passage of liquids, gases, and contaminating particles.

The O-ring is the most common type of seal. They are available in sizes as large as car tires and as small as pin heads. During manufacturing, O-rings are molded, but these rubber rings can also be assembled from extruded rubber cord. Due to its simple shape, the O-ring is relatively inexpensive to produce and easy to install.

 

The application and function of O-rings

The elastic properties of the O-ring and its relatively low cost make it one of the most widely used seals. It is possible to find O-rings in a multitude of standard sizes - both in millimeters and inches. It is therefore essential to choose the right rubber quality and hardness to achieve a satisfactory result.

Additionally, O-rings are considered a universal solution for sealing between flanges, around shafts, between hydraulic couplings and connections, in compressed air installations, and even as rubber coating on various machine wheels where good friction is needed.

In general, one can say that they are used as seals everywhere in the industry, including in many of the products and machines we use privately in everyday life.

 

What materials are O-rings made of?

O-rings are made from different types of materials depending on the requirements and characteristics of the seal - or the purpose the O-ring is to fulfill. The choice of materials also depends on the standards and norms that must be met, including for use in the food industry.

The O-ring is an elastic rubber seal used in countless forms of mechanical constructions and installations. For example, O-rings are used in industrial machinery where there is a need to retain a specific liquid, such as in a gearbox, where the purpose is to keep the oil inside the gear.

 

Also see our selection of O-ring cord

O-ring cords are both inexpensive and simple sealing elements with a very wide range of applications in hydraulic and pneumatic systems. With the need for special dimensions, O-ring cord has an advantage as the application can be customized individually to the specific solution.

However, O-ring cords should only be used for static solutions. Additionally, O-rings are available in different materials, making it possible to tailor the O-ring to the specific task. For example, the NBR type is not suitable for outdoor use as it is exposed to UV radiation.

 

Ahlsell is your supplier of O-rings

We have everything related to various O-rings. Find everything for your project in Ahlsell's online store - open 24/7. Timely delivery is a given. When you shop with Ahlsell, you can have your goods delivered in several different ways. You can see which delivery option best suits your needs here.

We have years of experience with the products. If you need advice about the products, you will experience professional expertise and good service if you call our sales department or seek assistance in one of our many stores across the country.

You can choose to have your orders delivered to your company, construction site, or a completely different location. You can also simply reserve the products in your nearest Ahlsell store. After a short time, all your products will be ready for pickup.

 

FAQ:

 

What is an O-ring?

• O-rings are seals that have a round cross-section and are made from rubber, silicone, metal, and plastic materials. Depending on the material, O-rings can serve different purposes within industry and regulatory approvals and standards. The pressure, temperature, and medium are crucial for your choice of material that the O-ring is made of.

 

How is an O-ring measured?

• There are several options for measuring an O-ring. First and foremost, you can use a measuring cone to measure your O-rings. This is a simple but quite effective method of measurement. You can also use a dedicated O-ring gauge to easily and quickly identify the size of your individual O-rings.