Exxon Research and Engineering Company

Jamco Products, Inc.

Roger Dean Paulson

Raphael M Bojarczuk

A hybrid gasket includes a core defining an aperture therein, the core having an outer edge portion and an inner edge portion immediately surrounding the aperture. The gasket further includes a chemically resistant material encapsulating the inner edge portion, and an expanded graphite material encapsulating the outer edge portion. A method of sealing two substantially parallel surfaces includes the steps of interposing between the surfaces a gasket, and securing the surfaces to one another. The gasket including a core defining an aperture therein, the core having an outer edge portion and an inner edge portion immediately surrounding the aperture. The gasket further including a chemically resistant material encapsulating the inner edge portion and an expanded graphite material encapsulating the outer edge portion. A method of forming a gasket includes the steps of providing a core defining an aperture therein, the core having an outer edge portion and an inner edge portion immediately surrounding the aperture, encapsulating the outer edge portion with an expanded graphite material, and encapsulating the inner edge portion with a chemically resistant material.

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Navasota, TX, United States of America

Roger Dean Paulson