When deciding what characteristics you need in your gasket, most people start with the basics – what type of material is necessary and what thickness is needed. Once you start to dial in on your selection, then you start to look at the various material properties that are specified (compressibility, recovery, creep, ignition loss, etc). All of this is done (most likely) with cost considerations in the back of your mind.
Another consideration that sometimes needs to happen is whether or not the gasket needs an anti-stick coating. Our cost-conscious readers might cringe a little at the thought of this because adding an anti-stick coating does add some cost to your gasket, but can you afford not to do this?
Do I Need An Anti-Stick Coating?
Anti-stick coatings can improve your gasket’s functionality and performance. Here are a few things to consider when deciding if an anti-stick coating is needed.
1. What is the design life of the joint?
Some joints are meant to be permanent, with engineers preferring a good bond to both flanges. In this case, an anti-stick coating would not be used, but perhaps a sealant coating.
2. Is it expected to be taken apart for maintenance?
In some cases, a clean release from flanges is preferred for maintenance or other reasons. In this case, the anti-stick coating will help the gasket release from the flanges upon teardown.
3. What are the flange materials? Are they dissimilar metals?
Flanges with dissimilar metals expand and contract at different rates. An anti-stick coating on the gasket provides a higher degree of lubricity and “slip” to allow the gasket to move with the joint instead of tearing apart.
4. Given temperature exposure, is there motion expected in the joint (expansion or contraction)?
Similar to #3 above, even flanges of the same metal can expand at different rates due to their structure and create a tearing effect on gasket materials. Anti-stick coating can address this issue and prevent damage to the gasket.
Ok, So I Need It
As you can see, it is very important to consider whether or not the gaskets in your application need an anti-stick coating. Most often, if a value-added step like this is needed, it is going to benefit the application in the long run. As we’ve said before, you never want the gasket to be the reason an application fails. Do your research and make sure the gasket going into your application is going to be able to get the job done.
Now, let’s get coating! If you are interested in subscribing to Sealed-In’s blog posts, email email@example.com. If you are interested in learning more about anti-stick coatings, and what Metal Tech offers in this area, check out our TechCoat product line!
The Why’s and How’s of Coating Your Gaskets
There are many reasons why one might coat a gasket. The motive may vary, but one thing is certain – a quality coating is necessary. Today, we’re going to look at some of the reasons why you may want to coat your gaskets as well as the types of coatings you should be seeking out and how they may be applied. Continue reading for some of the why’s and how’s of coating gaskets.
Jacketed Gaskets: Here’s Why & Where You’d Use One.
Have you ever dealt with applications that require jacketed (or sometimes called double jacketed) gaskets? While the technology may not be as commonly used as others, it is one that definitely has its place in the sealing world. In today’s post, we’re going to address what they are, as well as why and where you would use one.
Is There A Difference Between Gaskets & Seals?
Today we’re going to talk about gaskets and seals. These terms are generally used interchangeably. After all, gaskets seal a joint…so they’re the same, aren’t they? Read on for the facts about gaskets and seals.
What To Do If Your Gaskets Continue To Blow Out
Ok, so you’re now staring at an application that isn’t running, and you are holding a blown gasket in your hand. How should you be troubleshooting this? There could be any number of issues. Here are some of the more common problems and why they can cause a blowout. Hopefully at least one of these will get you pointed in the right direction.
4 Things to Know About Gaskets in High Performance Applications
Every market has its own set of preferences and needs as it applies to gaskets and the materials they are made from. High performance applications are no exception. Obviously, everyone needs gaskets that meet the requirements of the application, effectively seal and have value. However, there are some different considerations that you will need to pay attention to if you work or desire to work in high performance applications. Here you will find four things that you should be aware of when dealing with gaskets in high performance applications.
The Top 6 Applications Where Composite Gaskets Excel
As an experienced materials manufacturer, when we hear a customer or potential customer start talking about gasketing needs, there are certain applications where we know immediately that metal-reinforced composite laminates are a great option. To help you in your planning process, we decided to put together a list of the top applications where these types of gaskets excel (in no particular order).