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Why Should You Invest in Quality Seals?

While industrial seals might seem like something you could save a little money on, this is one part that we don’t recommend cutting costs on. A quality seal will offer many benefits to your business and operations, so it’s worth taking the time to find a solution...

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...

The importance of gasket thickness

Choosing the right gasket material for specific applications is vital. However, gasket thickness is also a feature that must not be overlooked in the decision-making process. Choosing the right gasket thickness can help when you’re experiencing challenges with...

How Temperature Impacts Gasket Performance

When using a spiral wound gasket, there are many things you need to keep in mind. The most common issue we hear people discuss regarding gasket performance issues at high temperatures. If you are using a gasket for the first time at a new temperature and notice it...

How Thick Should Gasket Paper Be?

When creating gaskets, one of the most common questions we receive is regarding gasket paper thickness. You’ll find there are various options on the market, which come in different sizes and thicknesses. Today we’re going to discover what gasket paper is and how you...

O-Rings for the Beer Industry

O-rings offer a wide range of applications, and many people aren’t aware of just how versatile an o-ring can be. When working with o-ring suppliers in the UK, you’ll soon find out that we supply these to a range of businesses, including to breweries. Today we’re going...

Gasket Safety

Gaskets and seals are vital components for applications requiring a solid seal, helping prevent leaks and stop gases and other chemicals from escaping.  However, over time, and due to the fluctuating temperatures, compression sets, and exposure to chemicals, seals do...

Is fluorosilicone rubber o rings a sustainable choice?

Fluorosilicone rubber, also known as FVQM or MFQ, contains 23-28% fluorine and has nearly the same physical and mechanical properties as standard silicone rubber as matches on par with their flexibility at low temperatures.  However, due to its fluorine...

Difference Between Ring Type Joint and Raised Face

Difference Between Ring Type Joint and Raised FaceIntroduction 

If you are new to the industry, you might not know the difference between Ring Type Joint and Raised Face. The difference is actually pretty simple and refers to the type of flange that you need to use when making your join.   

In this post, we will compare RTJ and RF so that you understand the differences more completely. Both types of joins are useful, but each has their own advantages and disadvantages. This post should give you more clarity and help you to identify what projects the different flanges are best suited for.   

 

Differences: Ring Type Joint vs Raised Face

Raised Face 

This is the type most commonly found in processing plants. When you see it, you will be able to recognise it straight away. In this model, the surfaces to attach the gasket to are raised. The bolting circle will always be lower than the gasket surfaces.  

The advantages are : 

  • You can use a wider range of gaskets – from spiral wound types to flat ring sheet types.  
  • As the surface is raised, it is more easily accessible. Replacing a worn gasket is thus a lot easier.  
  • This design enables more pressure to be concentrated onto a smaller gasket area. This, in turn, helps the joint handle pressure containment better.   
  • It is also useful when you need better separation between the two flanges being joined.  

  

Ring-Type Joint  

These are more commonly used in applications where either high pressure or high temperature is an issue. These are Class 600 or more flanges or where temperatures typically exceed 427° Centigrade.  

These flanges can be identified because they have grooves that are cut into their service. A metallic gasket is fitted into these grooves and then compressed to create a solid seal. The gasket is somewhat mangled in the process but fits into space perfectly.  

The advantages are:  

  • Metal to metal seals is made possible. These are a lot stronger and will withstand high heat, pressure and corrosion caused by chemicals.  
  • The grooves allow for a tighter fit and can be useful in situations where space is an issue.   
  • Depending on the type of gasket used, the faces may be in direct contact with one another.  
  • The gasket is not going to compress any more once it has been tightened. This makes it more resistant to movement and vibration.  
  • You have a reduced range of options when it comes to the type of gaskets that you can use. However, if you choose the right type for the job, the seal is highly reliable and strong. 

Conclusion 

As you can see, there are advantages to both types of flanges. You need to use the best design option for your project. It just pays to remember that you should always use the right connections for the best join possible.  

Using an RF connection on an RTJ is a recipe for disaster. It may hold initially, but something is bound to go wrong further down the line with this kind of tinkering.

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