Sealing Rougher Surface Finishes Using Conformable Rubber Coating on MLS

Some engineers in the U.S. are still hesitant to change from graphite cylinder head gaskets to MLS designs due to surface finish capabilities at engine plants and in the aftermarket. Sealing these various hardware surface finishes is accomplished via a rubber on the surface. The coating's ability to conform to various surface irregularities while withstanding high temperatures, long term coolant and oil exposure, and joint shearing forces is paramount to long term sealing. This paper will explore the sealing capabilities of a highly conformable flouro-polymer rubber coating developed specifically to seal rougher surface finishes.