| 摘要 |
<p>A gasket with heat-insulating properties is provided for mounting a carburetor on an internal-combustion-engine casting. A thick core of heat-insulating resin, such as phenol-formaldehyde resin, is sandwiched between two thin cutout sheets of resilient gasket material. The core provides the heat insulation, and the gasket material provides the resilience needed to assure sealing on rough surfaces. The core is molded to shape, while the gasket material may be cut out to shape and secured to it by a separate thermo-setting resin, such as a nitrile-rubber-phenolic-resin material. The core has passage means therethrough plus bolt openings. A first Mat surface faces the engine casting and surrounds the passage means and bolt openings. An opposite flat surface faces the carburetor. The cutout sheets can be made of nitrile rubber and asbestos fiber. Each cutout sheet has a continuous flat surface surrounding the passage means and the bolt openings.</p> |
