The Top 6 Applications Where Composite Gaskets Excel

There are a handful of gasket materials and technologies that are acceptable for a variety of conditions within an application. However, as you venture into specific conditions, those options start to narrow – especially as you get into higher temperature and higher pressure applications.

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).

Look to Composites

1. Exhaust system gaskets

Composite laminates work well in exhaust systems because they tolerate heat and distortion of the flanges. They can also be made with a stainless steel core to resist corrosion and provide long term performance.

2. Aftertreatment system gaskets (DPR, EGR, etc.)

Composite materials perform well here with the rigidity of the steel core for strength and the sealability of the facing material in aftertreatment joints.

3. Manifold gaskets (exhaust/intake)

Graphite laminates are one example of a composite laminate that works well in exhaust manifold gaskets. The material helps to manage heat flow while maintaining a seal.

4. Collector gaskets

Collector gaskets are generally high temperature flanged joints that require a compressible material to seal the joint. Often, composite materials are the first choice here due to their economic advantage and compressible nature.

5. Cylinder head gaskets

Head gaskets have been successfully made from graphite composite laminates since the mid 1980’s. These gaskets perform well as they seal a variety of surfaces while managing heat and providing long-term service.

6. Aftermarket/replacement gaskets (head, exhaust, and intake applications)

Composite laminates are by far the best choice in aftermarket/replacement applications. They provide additional compressibility and conformance to seal against less-than-ideal flange surfaces while compensating for removed material such as surfaces that are refinished. Composites also provide lasting service with their ability to compress and recover in these applications.

Materials that Survive

If you’re dealing with applications that meet any of these conditions, it is important to be aware of the types of materials that are known for successfully sealing them. Once you have an awareness of the general direction you should be going in, talk to a gasket material supplier that specializes in that type of material. Then, you can narrow down your choices to the one material that is best suited for the conditions it will need to withstand.

What are the other applications where you prefer metal reinforced composites?

Aftertreatment Systems Material Guide

Year in Review: Top Blogs From Our Two Years of Blogging

Sealed-In is now celebrating its two year blog-iversary! Our viewership continues to grow, and we hope that you have enjoyed the content we have produced (and learned something too!).

As is now our annual tradition, we decided to do a recap of our most popular blogs over the last two years. See below for our top 5 list of Sealed-In blogs.

The Top 5

Is There A Difference Between Gaskets & Seals?

3 Things You Need to Consider When Deciding on EGR Gasket Material

The Great Gasket Debate: To Reuse or Not To Reuse

What is Creep Relaxation, and Why Do I Care?

Why Would I Use Composite Gaskets When I Can Use MLS?

Thank You!

As always, thank you for your readership. We hope that we are becoming one of the first places that you go for information related to gaskets and gasket materials. If there is ever a topic that you’d like us to cover, please let us know – just drop us a comment in one of the blogs.

On to year 3!Request a Call

Year in Review: Top Gasket & Gasket Material Blogs From Our First Year

On October 27, 2015, Sealed-In launched its first blog. One year later, we are still going strong, and are very excited about our progress and our viewership. There aren’t too many places that you can find general gasket information, and we are happy to be a resource for you.

In celebration of our first blog-iversary, we thought we’d do a recap of our most popular blogs over the last 365 days. We hope you enjoy reading (or re-reading) them!

The Top 5

3 Things You Need to Consider When Deciding on EGR Gasket Material

The Great Gasket Debate: To Reuse or Not To Reuse

“What is Your Lead Time?” 4 Ways to Get a Better Answer From Your Supplier.

Is There A Difference Between Gaskets & Seals?

The Most Commonly Used Gasket Materials and Why You Need Them All

Thank You!

Whether you have been following us since the beginning or you are a new follower, we thank you for taking the time to stop by and read a few posts. We hope that you have been able to get your questions answered, or have read something that gave you reason to think. We are always looking for inspiration for future blogs, so if you have anything that you’d like us to explore, please let us know!

Here’s to Year 2!Request a Call

Tang (It’s Not Just For Astronauts)

When you hear the word “tang” what conjures up in your mind…an orange-flavored drink, a fish, a style of gasket material, or other definitions? The list goes on. We’ll let you guess which one we’re here to talk to you about. Is anyone thirsty for some Tang? If not, let’s start our discussion.

When we talk about our tanged (or perforated) core materials, do you have an understanding about what that is and why you may need it? Gasket material that is mechanically bonded together provides both strength and durability for the gasket in your application. There are also other reasons why you’d want to use a tanged core material – keep on reading to see why.

What is the Value to a Tanged Core?

1. Mechanical bond

With tanged core, there is a mechanical bond holding the material together, so as not to depend on a chemical bond that may degrade with heat exposure. Exhaust gasket composition benefits greatly from this mechanical bond to ensure the material retains its integrity both at and beyond the intended operating conditions.

2. Handling strength (durability)

The tang core provides strength for handling, often bonding high temp materials that would be weak if unsupported, creating a robust material with the metal-reinforcement. Handling in installation is a huge benefit.

3. Radial strength

The other strength issue is radial strength. This provides blowout resistance. The tang core provides a physical barrier and containment mechanism to hold the facing in place over the life of the joint. As compared to a glued laminate, the facing cannot extrude away from the core.

4. Durability

In addition to handling strength in assembly, the tang core also provides durability in the application. It serves to contain the seal’s facing in place to resist expansion and contraction due to thermal growth of the flanges.

5. Flange loading

Tanged core helps to provide load retention (torque retention of the fasteners). It does this by offering the metal structure providing “pushback” against the flange. The tangs create a “load stop” and structure, shouldering the load and preventing the facing from crushing under high load spots.

Give It a Shot

As you can see, it is hard to go wrong with a tanged core gasket material. Combined with the appropriate facings, this is a core that can meet the requirements of high temperature and high pressure applications. If you’ve never used tanged core materials before, you should consider how they would work in your application. A trusted gasket material supplier can help you decide if it is something you should explore.

Ok, now we’re thirsty.Request a Call

Why A Metal Reinforced Gasket May Not Be For You

We’re going to shoot you straight…you may never be in need of a metal reinforced gasket. There. We said it. You could call us up tomorrow and ask for gasket material for XYZ application, and after telling us about your needs, we’d tell you that you would be better off spending your money elsewhere. You might be asking yourself “what kind of sales pitch is that”? Well, it’s an honest one.

Gaskets cut from metal reinforced gasket material is a perfect solution for many applications out there. Just take a look at our blog post, “Why Would I Use Composite Gasket Material When I Can Use MLS?” However, you may not need what it has to offer for your application, and we don’t want to help you place a material for a gasket that isn’t right.

You Might Not Need One If….

1. Load is too light.

Soft rubber or foam applications are used where light loading is available.

2. Internal pressure is minimal.

Fiber products, sheet rubber, or other homogeneous materials are used when internal pressures are minimal.

3. Internal pressure is too high.

For pressure vessels, engineered seals can be required (as opposed to a cut gasket). These might include specialty metallic seals, channeled O-ring joints, and other sophisticated designs.

4. Temperatures are not severe.

For exhaust joints without high heat, a metal-reinforced joint may not be required. The issue quickly becomes a factor of handling (see #5).

5. Handling.

If there is no issue of time or handling to get the gasket into the application, a metal-reinforced gasket may not be required. Most engine or industrial exhaust joint applications are robust, and benefit greatly from metal-reinforcement to provide structure and rigidity to aid in both installation, and long term performance.

Find the Right Material

Since we potentially know what material you don’t need, now it is time to find the right material for your application. Using the wrong type of gasket material for your gaskets could cost you money and/or sacrifice performance. Choose wisely!

A trusted gasket material supplier, while they may not offer what you exactly need, should be able to help you get pointed in the right direction. Talking to your supplier is the best way to figure out what you need or don’t need. Even if you know that you don’t need metal reinforced material for your current application, it doesn’t hurt to educate yourself on the products…you never know when you’ll have an application that is right for it!

How often have you been pushed into a material that wasn’t right for you?Request a Call