Viton Rubber: The Definitive Guide

Most people haven’t heard of the high-performing elastomer Viton. Even those who have heard about it don’t know the full extent of its capabilities. As a result, today we will define Viton for you and discuss its benefits, uses, applications, and a brief comparison with commercial nitrile rubber. Let’s get right into it!

Table of Contents

What is Viton?

Viton Rubber

Viton is a high-performing fluorinated hydrocarbon. So much that it can withstand some of the harshest environments. As a result, it is widely used in the automotive and aeronautical industries.

Thus, Viton is prominently used for O-rings and other rubber-molded products. Most of these applications involve rough conditions, which explains Viton as the most suitable choice. However, even on its own, Viton has four different classifications. Let’s check them out in the next section that covers all critical properties of Viton!

Viton: Key Properties

Viton was initially marketed by DuPont, who then patented the name. As a result, this synthetic rubber is now famously known as Viton globally. Moreover, Viton has several uses when shaped into rubber products such as gaskets, seals, and O-rings.

However, Viton has more to it than just being a fluoropolymer elastomer. The Viton synthetic rubber has four different classifications based on the following grades:

viton rubber mouldings

Grade A

Termed Di polymers or elastomers comprise copolymers. This family of Viton has 66% fluorine content.

Grade B

Termed Terpolymers, this family of Viton contains 68% fluorine content. Moreover, the most common use of B-grade Viton includes gaskets or seals.

Grade F

Also called Terpolymers, this Viton grade contains 70% fluorine content. Moreover, the most common use for this type is in oxygenated automotive fuels.


Any Viton classified in this grade is a specialty type. The most common use for this type of Viton involves applications for oil exploration and the automotive industry.

Viton: Uses and Applications

Viton has tremendous uses in many industries thanks to its excellent properties. This high-performing elastomer can withstand conditions that many other synthetic materials cannot. Have a look at some of the most prominent use of Viton in various industries:

the doctors are making Chemical Processing
  • Chemical Processing: Viton has particular use in the chemical processing industry. Moreover, you will also see Viton products used in the petroleum refining industry. In both cases, the products used include gaskets, pumps, seals, etc. All the credit for these applications goes to the high chemical resistance of Viton.
  • Automotive Industry: the automotive industry readily uses Viton products. Why? Because Viton tends to resist a wide range of chemicals and oils, including silicone oil, gases, aromatic hydrocarbons, etc. Moreover, Viton offers high durability, which makes it suitable for long-term applications. As a result, Viton components in vehicles reduce the risk of mechanical breakdowns. Moreover, it is ideal for transportation fuel applications.
  • Aerospace Industry: Given Viton’s powerful and practical properties, the material is highly suitable for the aerospace industry. As a result, Viton seals, gaskets, and other products perform exceptionally well under high temperature and high-altitude conditions.
  • Medical and Food Industries: Viton also has low degradation, which makes it suitable for both the food and medical industries. On top of it, Viton can stay in contact with the skin without causing any harm for prolonged periods. As a result, Viton gloves are pretty standard and human-friendly.
  • Sports Industry: Sports requiring high-performing rubber components, such as Scuba diving, use Viton products. This is because Viton tends to perform well in the presence of oxygen. Moreover, Viton has low flammability, which makes it a perfect sealant for nitrox used by Scuba divers.

Viton: Benefits and Advantages

As we have discussed the various applications of Viton above, it is clear that the material has several benefits. However, to make it easier for you to point them out, we have listed them below:

Viton Rubber products with different characteristics
  • Temperature Resistance: Viton, as a material, tends to withstand high-temperature extremes. For instance, a good quality Viton product can withstand temperatures as high as 250-270 degrees Celsius. As a result, this rubber makes for a great alternative to other rubbers, such as nitrile or TPE, or even silicone, when it comes to high-temperature applications.
  • Chemical Resistant: Viton also tends to resist various chemicals and solvents. However, you must ensure that your specific grade can withstand the chemical. For instance, some Viton formulations can withstand hydrocarbons but cannot withstand ketones. As a result, it all comes down to the compounding by the manufacturer, which you can customize.
  • Environmental Resistance: as discussed above, Viton performs well in the harshest conditions. You can imagine the weather and ozone exposure at high altitudes where Viton products are used in airplanes. Viton easily withstands all of that without any need for frequent replacements.
  • Durability and Flexibility: given its resistance to harsh weather conditions, Viton offers incredible durability and flexibility. This helps businesses save up on maintenance and replacement costs. Moreover, the high durability prevents mechanical failures even in the long run. 

Viton: The Catch

We have talked about all the great benefits of Viton. But what’s the catch? Like any other rubber material, Viton isn’t perfect, either. Even though rubber has numerous uses in various industries, the following two things hold it back:

viton gasket


Viton is a highly expensive fluoroelastomer. As a result, this explains why and how it offers such incredible properties. Because none of that comes cheap, choosing Viton products must be done on a need basis. For instance, the aerospace and automotive industries constantly require high-performing materials. Otherwise, in conditions where other rubber materials can perform well, choosing Viton will just cost more.


This is not a drawback but just a precaution to take. Since Viton is used in highly high-temperature applications, it tends to decompose if the temperature goes higher than the limit. In such scenarios, the rubber decomposes and releases hydrogen fluoride. As a result, you are recommended to use protective equipment when dealing with it.

How Does Viton Perform Vs. Nitrile?

In our last section, we will compare two popular synthetic rubbers, Viton vs. nitrile. Both materials are readily used in similar industries due to their highly effective properties. However, they do have some key differences. These include:

Nitrile o-rings
  • Temperature Resistance: nitrile rubber products can withstand temperatures within the temperature range of -35 to 100 degrees Celsius. On the other hand, Viton can deliver excellent performance in high temperatures, withstanding it within the range of -20 to 260 degree Celsius. As a result, Viton is a better option for high-temperature conditions, whereas nitrile performs better in low-temperature conditions.
  • Oil and Chemical Resistance: nitrile can display good resistance to such a broad range of chemicals. These include oils, hydraulic fluid resistance, water, and petrol. At the same time, Viton also resists hydrocarbons. However, other than that, it resists chemicals such as petroleum oils, silicone fluids, and acids. This rugged rubber offers the best fluid resistance against silicone fluids.
  • Usability: this is where nitrile and Viton come together because both are suitable for heavy-duty applications. These include applications in the automotive industry, aerospace industry, and other industrial applications. However, nitrile costs lesser than Viton, so there’s a difference. Moreover, nitrile is more suitable for indoor applications in the same industries, whereas Viton is more suitable for outdoor applications.
  • Environmental resistance: even though nitrile handles regular wear and tear pretty well, it does not have good resistance to harsh weather, ozone, and sunlight. On the other hand, Viton can withstand all these, including UV rays, ozone, harsh weathering, etc. 

You can also learn the difference between Viton vs. Aflas.

Interested in Viton Gaskets, Grommets, and Other Parts?

Have a look at some frequently asked questions about Viton that you would want to know the answers to:

What is Viton used for?

Viton is a rubber polymer famously used in applications that require high-performing materials. These include automotive fuel systems, airplane engines, etc.

Is Viton and EPDM the same?

While both EPDM and Viton are two different types of synthetic rubbers, they have some similarities and differences. For instance, they have differences in terms of temperature and chemical resistance and applications.

Which is better, Viton or silicone?

Both have their unique chemical, physical, and good mechanical properties. As a result, deciding which is better depends on the application and the need of the situation.


Viton is a premium rubber that offers superb properties at a high cost. As a result, for its costs and properties, it is the most suitable for specific, highly demanding applications. The guide above details everything from the uses and applications of Viton. All you need now is a reliable manufacturer to work with.

Contact Hongju for a Reliable Supply of Viton Products

Here at Hongju, we offer a wide variety of Viton products. This includes seals, gaskets, hoses, sheeting, etc. On top of it, our process is entirely customizable. Hence, you can develop your design and measurements, and our team will deliver. Learn more about what we are capable of, and contact us as soon as possible!

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Hey there, I’m David!

I’m the founder of Hongju Silicone. I have been in this field for more than two decades. If you are looking for custom-made silicone rubber products, feel free to ask me any questions.

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