| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel-impermeability of a fuel tank at a low cost. SOLUTION: In the seal structure 1 at an opening part 3a formed in a fuel tank body 3 for building in a pump module 2a, a seal 5 used for the opening part 3a is formed of a material for general fuel (a blend (NBR/PVC) of acrylonitrile-butadiene rubber and poly vinyl chloride), hydrogenated acrylonitrile-butadiene rubber (hydrogenated NBR), acrylonitrile-butadiene rubber (NBR), etc.), and a fuel-permeability preventive material (fluorine-containing rubber (FKM), etc.), in two colors.
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