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Choosing the correct oil seal application

Choosing and using the proper sealing devices within oil and gas applications can be vital when preventing dirt, dust, water, and other debris from potentially getting inside and contaminating products.  Of course, all rubber materials and seals will provide a range...

Nitrile rubber, NBR, and Buna-N – how well do you know your o ring materials?

A widely used elastomer, Nitrile, Buna-N, or NBR rubber, are all oil and fuel resistant and provide a great level of strength, making them a popular material for seals across various industries.  Suitable for a range of applications, this versatile rubber material,...

Optimum squeezing force for an o ring

It is true that the more squeeze you place on an o ring, the tighter the seal it will provide. In essence, the more squeeze (compression) you apply, the greater the force between the o ring and its mating hardware.  And ensuring you have the perfect seal is all...

O Ring Squeeze

The squeeze and shrinkage on an o ring are vital to understanding as these factors stand in the way of your application either experiencing a perfect seal or your application suffering from leaks.  You can measure the shrinkage of an o ring during...

Keeping your o rings bonded

EMI o rings. Those seal ring gaskets are made of silicone compounds, combining environmental sealing with electromagnetic interference protection.  Consisting of metal or metal-coated particles, silicone o rings are filled with silver, silver aluminium, or nickel...

The importance of mechanical seals when reducing water consumption in mining

Environmental considerations are at the top of most industry's agendas in the 21st century as companies evaluate and improve operations, processes, and systems.  Conserving water in mining is one such area that is now being investigated further with the rotation of...

How choosing the correct gasket reduces risks

Health and Safety across any industry are vital, especially so in industrial facilities and settings.  Why?  Because harmful leaks and emissions must be avoided at all costs to avoid serious accidents or injury to your teams and property.  That’s why having the right...

How to tighten your bolts perfectly

How to tighten your bolts and which tools you should use to achieve the perfect seal is not as seamless and straightforward as we would like. Various factors come into play in these situations, such as bolt grade, size, and even application type.  Tightening torques...

Static and Dynamic o rings

A range of factors and application dynamics come into play when choosing a particular type of o ring.  You need to understand the type of seal exert you require, the dimensions, and even compounds.  Due to the nature of an o ring and its overall design, o rings use...

Gasket Sealants

Fortunately, no one gasket suits a range of applications, but rather we have a multitude of gasket sealants available to meet various specifications and requirements.  Ultimately, sealants are used to effectively ensure gasket seals.  Helping to extend a gasket's life...

How To Get A High-Quality Ring Type Joint

How to get a high quality Ring type JointChoosing the right high-quality ring type joint is essential. It has to be able to withstand both high temperatures and pressure. In this post, we will look at how you can choose the right type for your needs.   

What is Ring Type Joint? 

So, as Ring Type Joint explained, this gasket is forged in one piece to fit into the RTJ flange’s machined groove. If you were to take a cross-section of these gaskets, they would either be oval or octagonal in shape. These joints are typically used in applications where high temperatures and high pressure is present. 

It is most commonly used in the petrochemical and oil industries – from the drilling of the oil to storing it in refineries.  

How Does it Work?  

The ring is placed in the hexagonal groove that is on the front of the flange. It is then compressed by tightening the bolts so that the seal is tight. This makes a metal seal that is extremely strong and resistant to pressure.  

Types of Ring Type Joints Gasket 

You get three different types here: 

  • R 
  • RX 
  • BX 

 The R type is further classified by the shape when a cross-section is taken – oval or hexagonal.  

R  

Initially this would have fallen under the oval category. However, newer models can also be hexagonal. The latter provides a far better seal. The flange rating for use with the R type is Class 150 – 2500.  

RX  

These can be swapped out for the R type as they will fit the same sizes of grooves. This is deliberate to allow for greater versatility. There is a difference, though. This model is wider than an R type. Which means that the space between to two surfaces will be slightly wider as well.  

They are thus not suitable when you need a very tight face-to-face fit. However, it does make the seal more effective and will be useful when shock loadings, vibrations, etc. are an issue. They will fit up to Class 5000.  

BX   

These are more specialised in nature and not interchangeable with the other two types. They are made for API 6 BX flange types with a class rating of between 2000 and 20000 PSI. There is a hole in the ring designed to help equalise the pressure on either side of it.  

The ring’s pitch diameter is a little bigger than that of the groove it fits into. This makes preloading it possible and ensures that the seal is pressure energised. With this type, you need to make sure that the separation from face-to-face is uniform around the whole outside.  

Find Out More Here!

Identifying Your Gasket 

This is simple enough – it will be marked with the name or trademark of the manufacturer and a gasket number. Look just before this number, and you will see which type it is. The material it has been made out of is printed after this number.  

Conclusion 

It is important to choose the right type for the right application and to look for a high-quality option. If you do not, the seal will not hold for long at all.  

Specialist Sealing Products offers high quality sealing products such as Gaskets, RTJs, Sealing Rings, Insulation sets and other sealing products for business needs. Contact us and place your orders today. 

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