| 摘要 |
<p>A oil seal (10) is provided at a position on the outer periphery of a crankshaft (4) and seals two types of liquid, that is, lubricating oil and engine oil. The oil seal (10) is provided with: a first seal (11) which seals the flywheel side; a second seal (12) which seals the engine side; a pressure release hole (16) which is provided in either the first seal (11) and/or the second seal (12) and which connects a space (31) surrounded by the first seal (11), the second seal (12), and the crankshaft (4) to either the flywheel side or the engine side; and a partition lip (15) which is disposed between the first seal (11) and the second seal (12) and which divides the space (31).</p> |
