Filler neck closure with static charge dissipator

A fuel cap 10 for use with a fuel receiving assembly 13 defining a fuel port 11 establishes a common electrical potential with the fuel receiving assembly 13. An electrically conductive path is defined from the cap to the fuel receiving assembly, preventing escape of fuel vapours prior to the establishment of the common potential. The cap 10 comprises a handle 16 on the cap, at least a portion of the handle 16 and cap 10 being electrically conductive. A fuel port closure 18 engages said fuel receiving assembly. An electrically conductive retainer 20 is coupled to the cap, the retainer contacting the electrically conductive portion of the cap and the fuel receiving assembly 13 so as to provide the electrically conductive path from the handle through the retainer 20 to the fuel receiving assembly. A seal 21 on the cap 10 seals the fuel port 11 when the cap 10 is engaged with at least a portion of the fuel receiving assembly 13. The seal 21 is positioned in the cap 10 to seal the port 11 and prevent escape of fuel vapour until the common electrical potential is substantially achieved.