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.

Aftertreatment

Hello Out There!

Greetings! If you are reading this initial blog post, you are helping us to make history. We here at Metal Tech Industries have decided to make our voice heard and jump on the blogging bandwagon, and this is our first crack at it. (Please go easy on us!)

What You Need To Know About Us

Metal Tech Industries (MTI, to those that prefer acronyms) is located in Iowa Falls, Iowa. We are a manufacturer of metal reinforced gasket material, and over the last few years have expanded our product line to include heat shields. We have been in business for 21 years and counting, and are on the verge of relocating to a brand new facility that is almost 3 times the size of our current operation. That’s enough about us, but if you’d like to read more, please visit our website at www.mtigasket.com.

Why We Are Blogging

Well, plain and simple, we want to educate our readers so they can make informed decisions. We know there are a lot of decisions to make where gaskets are concerned, and there are a lot of questions people ask in order to to arrive at their decision. We know that you can easily pick up the phone to ask your trusted gasket material supplier or fabricator, but for those of you that are in the market for a trusted supplier (clearing throat…check out www.mtigasket.com) or just prefer to do some of your research online, you have found the right place!

Why You Should Read This Blog

Our #1 goal is to be your trusted online educational resource. We are going to address many of the common gasket questions (material, design, performance), as well as some of the other not so common questions. If you have a specific question, please let us know – we’d be happy to answer – it might just be a big enough question that we decide to feature it in an upcoming blog post. If you’re asking, there are probably many others that have had the same question at some point. We are also going to address topics on the full spectrum of complexity – we want to be a resource for everyone – experienced engineers, new engineers, fabricators, purchasers, buyers (to name a few) and YOU!

Our aim is to give you honest, straightforward, non-biased information. Yes, there are benefits to each and every gasket material. No, there is not one type of gasket material that will work in every application. We would love to have each and every one of you as a customer, but the fact is, not every single one of you has a need for metal reinforced gasket material. With that said, we want to educate and arm you with information to get you moving in the right direction for your application. In the end, that’s all that really matters.

Class begins next week – tell your friends!

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