NEW

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?

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...

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...

The importance of gasket thickness

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 fitting, achieving sufficient bolt load, or there are challenges with the surface finish.

For example, opting for a thicker gasket may be the most suitable choice if an application includes thin flanges that, when bolted, will not be flat.

At SSP, we work with our customers to help you find the right gasket for your application, focusing on material type and thickness. Contact us to find out more and have your questions answered.

Gasket thickness selection

You will often find thicker gaskets typically used on vessels with large diameter flanges (flanges with a diameter of over 1.5 metres), as well as in low-pressure applications, applications with minimal bolting, and where there is little to no high internal pressure.

In these situations, thin gaskets will not be able to provide the tight seal required due to the lack of compression available across these, what is termed `uneven` flanges; hence there will be an increase in the risk of leaks.

Thicker gaskets are also better when dealing with damaged or warped flanges, as they can fill flange irregularities due to their ability to compress a larger physical amount. This extra compression means a thicker gasket can easily fill deep scratches or low spots on the flange surface.

In essence, if there is limited bolting, limited compression, and thin flanges, thin gaskets will distort, providing no tight seal between the two surfaces in question.

However, it’s important to note that if you do opt to use a thicker gasket, you may experience higher creep relaxation, requiring a retorquing of the bolts to maintain the correct compressive load.

We must also highlight that a thicker gasket also has a higher leak rate as it has a larger path for permeation. And thicker gaskets can also be subject to higher forces that will attempt to push the gasket out of the joint.

However, for flanges that operate in high-pressure applications, opting for thinner, standard gasket thickness is best, as in these situations’ flanges will typically stay flat when bolted.

Using a thinner gasket on these occasions provides you with a lower leak rate, a higher resistance to a blowout, and better torque retention in the fasteners.

Ideally, thinner gaskets are recommended wherever possible, especially when flanges and surface areas are exposed to internal pressure.

Thinner gaskets also cost less, making them much more cost-effective if used correctly and in the right application.

However, it is not always possible or suitable to use thin gaskets, as we have mentioned above. Ultimately, you need to understand the design of the application, flanges in place, and the calculations for the gasket to ensure you choose the correct gasket material.

This is why it is vital that all flanges should be well maintained, the right materials should be used, and gaskets should be suitable for the application they are intended for.

Industrial gaskets

When using industrial gaskets for sealing purposes, it’s important to consider the final compressed thickness.

That, and how specific situations will require specific gasket thickness requirements. For example in:

  • Split case pumps – thickness affects the two halves of the pump.
  • Piping systems with long runs
  • Gaskets in grooves – compressed thickness after loading must be greater than the gap created when the flanges hit.

Gasket selection is not as straightforward as it seems, and there are a lot of considerations to bear in mind before making the right material and thickness selection. You need to account for all variables in the application and remember that proper installation is essential.

You need to work out what is best for your application. Considering:

  • Flange load and desired compression
  • Condition of the flange, i.e., surface finish, stiffness, flatness, etc
  • Will there be any warping or deformation to consider?
  • What is the current gasket preference?

Thin gaskets minimise compressibility and provide better load retention and recovery elements.

Thick gaskets – can better accommodate flanges that warp, deflect, have rough surfaces, or aren’t entirely flat.

Our recommendation?

Test it out. Testing different gasket materials and thicknesses based on results and adjusting these accordingly is key.

Having the correct gasket suitable for compressibility and recovery can make all the difference to the overall performance of an application and the final outcome.

With a range of gaskets in the UK to choose from, let the team at Specialist Sealing Products help you.

With years of experience, an abundance of knowledge of gaskets and seals, and working with customers across various industry sectors, we know our gasket material and thickness calculations.

Speak to a team member today on 01535 274 776 or email us with your requirements at sales@specialistsealingproducts.co.uk.

Previous

Next

Contact Us
close slider