Acoustic grommet

A one-piece grommet, comprising:

• a hollow main body having a front opening, a back opening, and central primary passageway extending between the front and back openings, the central primary passageway being disposed for receipt of a primary wire, wire harness or wire bundle;
• an annular body surrounding a portion of the main body and being spaced from and integrally joined to the main body, the annular body having a cylindrical hollow central portion, a front flange portion, an acoustic chamber formed in the front flange portion, an intermediate flange portion, a back flange portion, and an annular panel-fitting groove formed between the intermediate and back flange portions;
• a secondary passageway formed between the inner wall of the annular body and the main body, the secondary passageway being disposed for receipt of at least one auxiliary wire and being spaced inwardly from the acoustic chamber and the annular panel-fitting groove and outwardly from the primary passageway such that the secondary passageway does not pass through the acoustic chamber, the annular panel-fitting groove or the primary passageway;
• and
• a back annular rim section defined between the back opening of the main body and the inner wall of the annular body, the annular rim section having formed therein one or more first through-holes and one or more protruding members having removable ends and covering the one or more first through-holes, the one or more first through-holes and the one or more protruding members being disposed in communication with the secondary passageway.