| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gas tank which can obtain excellent sealability for a long period.SOLUTION: A mouthpiece 16 has: a flange part 22 in contact with a shoulder part 15 of a liner 12 from outside; and a step part 26 formed on an edge part on a through-hole 24 side in the flange part 22. The liner 12 has: an insertion hole 12a communicating with the through-hole 24; and a seal part 31 where the edge part of the insertion hole 12a is bent into a cross-sectional U-shaped or a U-shaped and housed in the step part 26 and an inner peripheral side is a seal piece part 31a gradually narrowing toward an attachment direction of the mouthpiece 16 of a valve 17. The valve 17 has a seal surface 36a adhered to the seal piece part 31a in the seal part 31 of the liner 12 by being fastened into the through-hole 24. The seal part 31 is elastically deformed by the seal surface 36a of the valve 17 by the seal piece part 31a being pressed against an outer peripheral side.</p> |
