Fuel tank cap and method of manufacturing the same

摘要

A fuel tank cap which closes an inlet of a filler neck of a fuel tank comprises a casing body which freely opens and closing said inlet; a conductive cover member (40) attached to an upper portion of said casing body; and a discharge projection (46) located on an end portion of said cover member (40) for discharging static electricity stored in said cover member (40) to said filler neck, wherein said cover member (40) has a volume resistivity in the range of about 10<4> to about 10<9> OMEGA•cm, and said discharge projection (46) has a volume resistivity that is smaller than a volume resistivity of any other part of said cover member (40), said discharge projection (46) being spaced apart from said filler neck by a discharge distance of not greater than about 1 mm, when said cover member (40) is attached to said filler neck.