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!

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

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!

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

EGR (exhaust gas recirculation) valves serve a specific purpose in engines. They recirculate exhaust gases from the exhaust stream, sending some back into the engine to be burned again.  This helps to reduce emissions by further burning the byproducts of combustion.

EGR valves can be can be  thermally operated or electrically operated. Generally, there is an operating mechanism that “opens” and an actuator mechanism that makes it do so. Older style EGR’s had more mechanical operation driven by heat to open the valve. More recent styles feature electrically operated valves.

EGR

What Material Should You Use?

If you are involved with making the decision on EGR gasket material, there are 3 main items of consideration.

1. Temperature Involved

EGR by nature is a hot application. Designers need to know the temperature exposure that a EGR seal point would see to determine what material to use. Generally a metal-reinforced material is the proper solution. If high temps (>1000°F), a mechanically clinched product is best.  Over the years, flexible graphite has been an excellent solution in this area. High temp fiber products have also shown good performance and offer insulative properties as well.

2. Flange Load

Generally, EGR valve flanges feature stiff flanges and 2 sufficient bolts. This is usually adequate for a tanged metal composite gasket (either graphite or high temp facing) to seal both initially and long term. For joints where less flange load is available and temperatures are not as high, a solid core graphite design might be considered.

3. Insulate or Conduct

The thermal question is the key. With the exposure to high temperature always present, the control part of the valve needs to be protected or isolated from the heat. In many cases, designers prefer an insulative material to accomplish that task.

Decide on a Material

EGR valve gasket applications are an excellent candidate for metal-reinforced, high temperature gasket material.

If you have any questions about your EGR application, please let us know!

Metal Tech manufactures HT400, and has had much success with it over the years in EGR valve gasket applications. The HT400 offers thermally insulative properties to reduce heat flow and protect the components, while maintaining an effective seal.

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