| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a seal member excellent in sealability and capable of preventing the cooling capacity from lowering.SOLUTION: A seal member for coolant passage includes a body mounted along the outer circumference of the coolant passage in a coolant passage formation member, and having a closed shape surrounding the coolant passage, and an extension formed on the inside of the body and thinner than the body. Preferably, the outer circumferential surface of the coolant passage formation member is flat, and the extension extends over the entire circumferential surface on the inside of the body.</p> |
