Filler neck assembly for fuel tank

摘要

A filler neck assembly includes a plastic fuel tank having a wall with an opening extending therethrough. The filler neck assembly also includes a filler neck tube extending through the opening in the fuel tank and having an annular stop flange projecting radially outward from the filler neck tube outside the wall and an annular lock flange projecting radially outward from the filler neck tube formed inside the wall to lock the filler neck tube to the fuel tank. The stop flange and the lock flange provide the sole means for securing the filler neck tube within the opening. The filler neck assembly further includes a seal interposed in the opening between the wall and the filler neck tube and a washer disposed inside the fuel tank between the wall and the lock flange to engage the seal.