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The importance of backup rings to O rings

Backup rings are ultimately used to help stop o ring migration, and they achieve this in both static and dynamic fluid power applications as the pressure cycles occur, preventing the extrusion of an o ring in the gap.  Ultimately a backup ring is a rigid ring that...

Gasket manufacturing process explained

Specialist Sealing Products have been providing high-quality gaskets to customers throughout the UK for many years. We pride ourselves in the range of gaskets we have available, suitable for a variety of applications across a range of industries.  Rubber gaskets are...

Designing seals for the food industry

There’s a number of factors to take into consideration when designing seals for the food industry. That’s because seals used within this sector need to work exceptionally hard in all food processing environments where hygiene and health and safety are of the utmost...

Storing your gaskets!

A strange headline for a gasket article, we know.  However, it’s an important area and one, which in this sector is often overlooked.  When we think about most products or items in and around our homes and business, we will recognise that most come with manufacturing...

Flange Gasket materials – What you need to know

Getting the most out of flange gasket materials and ensuring the performance of the gasket is not affected when you come to use it, means several things must be taken into consideration.  For example, factors such as their design, how they’re manufactured, installed,...

Spiral Wound Gaskets and Sheet Gaskets

Gaskets come in a range of different shapes and sizes.  All are offering similar functionality; gaskets are produced using a range of different materials to suit a range and a variety of environmental factors, industrial uses, and product requirements.  When it comes...

Benefits of Kammprofile Gaskets

Used to prevent leakage, gaskets are constructed to fit between a range of different sizes and types of surfaces in order to provide the perfect seal.  Typically used in pipes and heat exchangers, gaskets are widely used as industrial sealants.  Kammprofile gaskets,...

Purpose of a Kammprofile Gasket

The ultimate purpose of a gasket is to stop leaks while being able to deal with varying levels of compression.  When it comes to Kammprofile gaskets, these are ideal for standard pipeline and heat exchanger applications.  As due to their grooved metalcore, with a...

Are your gaskets completely compliant?

In industries where gaskets are not just important but essential, there are numerous challenges to be faced and considerations to take on board.  This is especially true when it comes to making sure this “essential” element is also compliant.  With the implementation...

Everything you need to know about Manway Gaskets

When it comes to manway gaskets, we want to keep things simple, introducing them as the small sealing ring found in hatches/openings that are constructed for large tanks. Openings which give people access to the inside of the aforementioned tanks and vessels. The...

4 Standard Types of Ring Type Joint

4 Standard Types of Ring Type JointIntroduction

ring type joint is a specialised gasket, designed to be used with flanges that have grooves in them. The advantage of this type of gasket is that it is made of metal and so creates a seal that is very strong and reliable.

It will withstand the pressure of up to 1500 Bars and temperatures of up to 1000° Centigrade. Also, it is resistant to chemical corrosion. The gasket is fitted into the groove. The two faces are then bolted together. As the ring type joint is compressed, it creates a solid seal.

They come in a range of different metals, from soft iron to stainless steel. It is essential to choose the right type of metal and shape for the job at hand.

4 Standard Types of RTJ

There are four basic types that you will need to choose from. These types are based on the shape of the ring and the flange groove that it will fit into. You will need to select the right shape to fit the groove, but also consider the type of metal as well.

The metal that the gasket is made of is softer than the flanges themselves. This is to prevent damage to the flanges and to ensure that the seal is good.

R Oval RTJ

If you were to take a cross-section of this model, it would be an oval shape. It is designed to fit the standard flange. The oval shape is the first design to have been made.

R Octagonal RTJ

These will also fit a standard flange, but a cross-section of this one would reveal a hexagonal shape. This provides a tighter seal than the oval models.

RX RTJ

These are interchangeable with the previous models. The RX models, however, are wider than the previous type. This means that the two faces being joined will not be right up against one another. This is useful when compensating for vibrations, shock loadings, etc.

They can seal themselves and can be used up to a Class 5000 and up to 700 Bars of pressure.

BX RTJ

These cannot be interchanged with the other two types and must be used with BX flanges of the API type. It is capable of handling a lot more pressure. They can handle up to 1500 Bars of pressure.

They can handle more pressure because there is a small hole that is drilled into the to ring itself. This is what makes pressure equalisation on either side of the join possible.

The ring is slightly bigger than the groove that is made for. This is to create a high-pressure seal. The downside is that more careful fitting is required. You need to ensure that the separation between the two joined piece is nice and even all the way around.

This can handle a class rating of 2000 to 20 000 PSI.

Conclusion

Ring type joints provide strong seals that are useful in high-demand situations. With the right model, you can be sure that the seal will be reliable and will hold well. There are also more customized types of Ring Type Joint, but the standard ones are normally more than adequate.

Read the next article: Difference between Ring Type Joint and Raised Face 

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