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Medical Grade Seals

When looking at your options for gaskets and seals, you’ll see that some products are marked as medical grade. These seals offer a range of extra benefits and features when compared to your typical seals, and they are required for many different types of processes....

O Ring Face Seals

While you may be familiar with O-rings, these come in various types, which offer benefits to a range of manufacturing applications. Sometimes called a toric joint, O-rings work to seal the area between two different joined parts. This means that even when working at...

Straight Thread Tube Fitting O-Rings

When looking at the types of O-rings on offer for your manufacturing processes, you might be wondering which would be the best solution for your unique needs. Today we’re going to take a deeper look into what straight thread tube fitting O-rings are and how we can...

Can You Use Corrugated Gaskets Instead of Spiral Wound Gaskets?

If you’ve always relied on spiral wound gaskets in the past, you might be wondering if there is an alternative option on offer. Corrugated gaskets offer many benefits over spiral wound gaskets, which is why so many companies are opting to switch between these two...

What is a Wiper Seal?

An important component that’s often overlooked by businesses and manufacturers is the wiper seal. If you are wondering what a wiper seal is, today we’re going to discover why you need to use them and how they can support your work. Go to the homepage for more...

How to Choose the Right Seal for Electric Motors

When choosing a seal for your electric motors, there are many options on the market. Finding the right electric motor shaft seal is critical to ensure your customers are happy and that your vehicles fit their needs. Keep reading to discover how to choose the right...

Why Should You Invest in Quality Seals?

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All you need to know about Neoprene O rings

Popular in the refrigeration industry, neoprene o rings are also growing in popularity across a wide range of other sectors due to their incredible resistance to hazardous materials. Also known as chloroquine o rings, these o rings provide excellent resistance to...

Why all sealants are not the same

It's important to understand just how critical it is to use the correct type of sealant. It's especially the case when working with heavy machinery or any industrial situation. You don't want to have to worry about whether your sealing products are working correctly...

How to understand O-rings and their design

O-Rings are a critical component for the proper sealing of specific pipes. They have to sit within a specified groove, which can vary based on the hardware used. That's why it's important to note the various types of o-ring groove design to understand better what kind...

High-temperatures and O Rings, what you need to know

o rings and high temperatureFluctuations in temperature and indeed heat is a significant factor across many applications that make use of o rings. 

However, what is well known is how destructive heat can be when it comes to compound deterioration. 

You are making choosing the ideal o ring suitable to withstand those high temperatures, essential. 

Because of this, there are several factors that need to be taken into consideration. 

In this post, we take a look at some of the most popular materials suitable for those high-temperature and chemical applications, what they are best used for and what applications they should avoid. 

Most commonly found o ring materials and their suitability to specific applications 

Viton, or FKM, is primarily used for automotive oils, fuels, and gases, due to its high level of resistance to these substances at extreme temperatures. 

Viton ultimately does not allow liquids such as mineral oils, hydraulic fluids (non-flammable), grease and silicone oil to pass through the seals.  Plus, it is extremely compatible with several hydrocarbons. 

However, and important to note, we would not recommend the use of Viton material seals with liquids such as brake fluid, ammonia solvents, super-heated steam, and strong acids. 

The material ACM, on the other hand, can resist gearbox oils, and transmission fluid. And the difference between ACM and FKM is that ACM can work at a lower temperature in comparison to Viton (150 degrees for 200 degrees, comparatively). 

Nitrile or HNBR is the most recommended sealing product material for sealing that needs a strong abrasion compound. Ideal for oils, fuels, gases, hydraulic fluids, and more. 

Please note: Nitrile does have limited resistance to brake fluids, and we don’t recommend this as a suitable material to withstand chlorinated hydrocarbons, strong acids, and polar solvents. 

A material that can withstand temperatures of 232 degrees and is used in a range of automotive sealing is that of AFLAS. For all compression is affected here, this material is still more than suitable with all makes of automotive brake fluids, engine coolants, motor oils, gear lubricants, power steering fluids, and more. 

However, AFLAS will not suitable for ketones, aromatic fluids, or chlorinated hydrocarbons. 

Silicone or VMQ is a widely used o ring material due to its resistance to high temperatures. It is mainly used for products that are highly exposed to ozone, Ultra Violets, and weathering. Silicone is not, however, suitable for hot water, chemical, or dynamic applications. 

Those universal compounds that offer both temperature and chemical resistance are both FFKM, perfluoro elastomers, and Teflon, PTFE.  PTFE is a tough, robust, and inflexible Thermoplast, while FFKM is classified as a thermoset elastomer. 

Unfortunately, PTFE material o rings are easily dented due to their hard material, so hence do suffer from high compression sets. 

However, following in the footsteps of PTFE o rings is that of FEP o rings. A seal that has a chemical and heat resistance similar to a PTFE seal. However, an FEP is much more flexible. A practical and effective solution for static applications such as pumps. 

FFKM is available through a variety of brands and can be provided in a variety of different material grades to suit a variety of different applications.

Find Out More Here!

However, the price can be everything 

Cost plays a vital role in the selection of an o ring, as well as the factors based on the materials we’ve outlined above. 

It’s important to be aware that there is a price difference between the different compounds of o rings, as well as sizes and grades. 

Being aware of this and the different materials available and what they are most suitable for will help you make the most informed decision, suitable for your application. 

Specialist Sealing Products are one of the leading suppliers of o rings throughout the UK. Based in Leeds, we work with many businesses, with a number of applications, all looking for the best sealing products around. 

To find out more, make sure to call us today on 01535 274 776. 

Read the next article: Optimal Squeeze for an O Ring to be effective 

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