| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device capable of forming a good lubricating oil film along the entire circumference of a sliding surface.SOLUTION: The sealing device 1 is fitted in an annular groove formed in either of two elements that are a housing having a shaft hole and a shaft inserted through the shaft hole, and the sealing device 1 seals an annular gap between the two elements. The sealing device 1 has a seal ring 2 sliding against the other element by relative axial movements of the two elements. In the seal ring 2, on each of axially opposite ends of the sliding surface 20 sliding against the other element, a plurality of grooves 22 extending from an end surface 21 of the seal ring 2 toward the axial center of the sliding surface 20 are formed respectively. A boundary line between each of the grooves 22 and the sliding surface 20 is formed only by lines inclined relative to the sliding direction of the sliding surface 20. A plurality of grooves 23 are circumferentially adjacently arranged so that regions each having a boundary line formed by the inclined lines are continuous along the entire circumference of the sliding surface 20. |
