| 主权项 |
1. A cap for forming a sealed cavity around an end of a fastener, the cap comprising:
a. a cap body with an annular base terminating at an inner cap rim which surrounds an opening into a central cavity and lies in an inner cap plane around a majority of a circumference of the annular base; b. a skirt providing an annular pocket between the skirt and the annular base, wherein the skirt has a first part which is integrally formed with the cap body from a first material and terminates at an edge, and a second part which is formed from a second material and extends from the edge of the first part of the skirt to a skirt rim, wherein the skirt extends to or through the inner cap plane around a majority of a circumference of the skirt, the first material has a first elastic modulus, and the second material has a second elastic modulus which is lower than the first elastic modulus; and c. an inlet hole in the skirt, wherein the inlet hole is in fluid communication with the annular pocket to permit a flow of sealing material through the skirt via the inlet hole into the annular pocket. |
