| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylinder device suppressing leakage of oily liquid to the outside.SOLUTION: An oil seal 15 includes: an annular member 55 locked to a cylinder 11; an annular oil lip 70 provided on the side of the annular member 55 inside the cylinder and hermetically brought into contact with a piston rod 13; and an annular dust lip 59 provided on the side of the annular member 55 outside the cylinder and hermetically brought into contact with the piston rod 13. The oil seal 15 has a discharge port 84 formed in the outer side of the oil lip 70 so that the oily liquid in a sealed space 81 among the oil lip 70, dust lip 59 and piston rod 13 is discharged to the inside of the cylinder 11. |
