| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gasket that can be used in a variety of environments allowing the passage of air through the gasket while simultaneously preventing the passage of liquid through the gasket for solving pressure build up problems. <P>SOLUTION: An article, specifically a sealing gasket 10, includes at least one layer of microporous expanded polytetrafluoroethylene (ePTFE) and at least one air permeable layer 14. The sealing gasket 10 simultaneously provides for the passage of air through the gasket 10 while limiting the passage of liquid through the gasket 10. The sealing gasket 10 may be used between two components that require air flow between the components while limiting the passage of liquid between the components. In one aspect, the air permeability is at least 0.01 cubic feet per minute (CFM) per square foot as determined by ASTM D 737 testing. <P>COPYRIGHT: (C)2012,JPO&INPIT |
