Gasket containing fuel permeation barrier

Details Gasket containing fuel permeation barrier Gasket containing fuel permeation barrier

2007-05-03

2009-08-18

Kamen, Noah (Department: 3741)

Internal-combustion engines

Frame construction

Horizontal cylinder

C123S1950HC, C277S313000

Reexamination Certificate

active

07574990

ABSTRACT:
A method for reducing fuel permeation through gasketed joints in an internal combustion engine (10) includes surface treating the gaskets in a halogenated medium before placing them into service. A low-cost elastomer such as acrylic, EPDM or HNBR, can be used for the gasket body. The halogenated medium may comprise either a liquid bath or a gaseous bath, into which the gasket is immersed. The halogenated medium bath is excited by heating to accelerate the halogenation process. A gasket treated according to this invention possesses a chemically altered exterior surface which substantially enhances its fuel permeability resistance at relatively low cost.

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