Every seal point is unique in its gasketing needs. Due to this, special attention should be paid to the type of gasket material that is selected for use in the various seal points. What you are sealing, as well as temperature, pressure, flange conditions, and available load are all factors that matter.
Exhaust manifold gaskets are no exception. Having an understanding of the conditions that this gasket is exposed to makes it much easier to decide on a gasket material. In the absence of you knowing exhaust manifolds inside and out, we are happy to get you pointed in the right direction.
Things to Look For
Here is a list of some of the more ideal characteristics of a gasket material used in the exhaust manifold.
1. Heat tolerance
The gasket material should be able to withstand the temperature of the application without oxidizing, burning, or otherwise disintegrating. MTI offers the Hi-Tex line of products for high-temperature applications.
The gasket should compress or conform to flange conditions and irregularities to make a good seal. Is the joint designed for a precision steel gasket, or can a cost savings be found by utilizing a proven, composite style design? MTI’s Hi-Tex line of laminates also performs very well in the exhaust manifold.
3. Flange conditions
Is there thermal motion and scrubbing present? Sometimes gaskets must be very robust to resist or tolerate thermal motion and still maintain a seal. MTI’s Armor products address this issue with metal-clad construction.
Deciding on a Material
Once you understand what is necessary to have in an exhaust manifold gasket, it becomes pretty easy to narrow down your material choices. If you still aren’t sure about the material that will best meet your needs, talk to your trusted gasket material supplier. They should be able to recommend a material that is a known performer in this seal point.
What other characteristics do you feel are important in this seal point? If you are interested in subscribing to Sealed-In’s blog posts, email firstname.lastname@example.org.
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Gasket Materials for Extreme Heat
This customer has been using HT 400 successfully for years in exhaust gas recirculation (EGR) gaskets. They had a new application, and they tried the HT 400 because it has always worked for them, but they started experiencing heat related issues...
The Metal Tech Hi-Tex series features our specially designed starburst core tang technology. This robust metal core, available in carbon or stainless steel, provides optimum strength for the laminate in the most demanding applications...
The Metal Tech Armor series of products consist of perforated metal outer layers applied mechanically to one or both sides of a compressible center layer material. Available with carbon or stainless steel, the high strength steel outer layer protects the inner sealing layer for long term performance...