| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device which maintains sealing performance over a long terminal and is manufactured at low costs.SOLUTION: A slinger 8 of a sealing device has a structure where an annular flange part 62 and an annular movable plate 70 are joined in an axial direction through an expansion body 80 which absorbs water and expands its cubic volume. When water intrudes into an axial lip 53, the expansion body 80 expands thereby causing the movable plate 70 to displace to the axial lip 53 side. |
