초록 ▼

A pre-cast dome-like shell is loaded with a predetermined amount of curable sealant. The sealant and dome are similar in composition. The dome is pressed over the exposed end of a fastener. An elastic portion of the shell can expand, thereby increasing the internal volume of the shell to accommodate

A pre-cast dome-like shell is loaded with a predetermined amount of curable sealant. The sealant and dome are similar in composition. The dome is pressed over the exposed end of a fastener. An elastic portion of the shell can expand, thereby increasing the internal volume of the shell to accommodate small variations in sealant amount. A close fit between the shell and fastener, combined with an adequate shell wall, insure proper shell orientation and barrier thickness.

대표청구항 ▼

A protective and insulating seal for a fastener, the seal comprising: a continuous and uninterrupted shell having a base portion surrounding an opening into a central cavity and a portion of reduced wall thickness; the central cavity containing a polymeric sealant which adheres the shell over the fa

A protective and insulating seal for a fastener, the seal comprising: a continuous and uninterrupted shell having a base portion surrounding an opening into a central cavity and a portion of reduced wall thickness; the central cavity containing a polymeric sealant which adheres the shell over the fastener; and wherein the portion of reduced wall thickness is integral with the shell and is extensible from a first position to a second position, whereby the volume of the cavity changes from a first volume to a second volume.