Fastening element

A fastening element for fastening a component to a rubber-elastic tube or preform, said rubber-elastic tube or preform having an interior surface, an exterior surface, and an opening extending between said interior surface and said exterior surface, said opening being defined by an opening surface, said fastening element being adapted to be inserted in use into said opening and having an essentially concentric shape with respect to a central axis, said fastening element comprising:

• an end flange forming a first longitudinal end thereof;
• an oppositely disposed second longitudinal end which is provided with a threaded connection;
• a conical section which expands conically from said threaded connection toward said end flange;
• and
• a cylindrical section which extends between the conical section and the end flange,
• said end flange extending radially with respect to said central axis to form a flat first support surface which contacts said interior surface of the rubber-elastic tube or preform,
• said conical section forming a second support surface which contacts said opening surface of the rubber-elastic tube or preform, and
• said cylindrical section forming a further support surface which contacts said opening surface of the rubber-elastic tube or preform.