| 摘要 |
PROBLEM TO BE SOLVED: To facilitate easy removal even if earth and sand etc. infiltrate, while constituting a curved road that it is difficult for the earth and sand etc. to infiltrate into a floating seal.SOLUTION: An axial passage 47 that opens to an axial direction of a fixed side flange 25 is formed between an inner circumferential surface of a cover member 40 and an outer peripheral surface of a circular stepped part 25a of a fixed side flange 25. Moreover, a radial passage 48 that opens to the radial direction of the fixed side flange 25 is formed between an end face of a cover member 40 and a stepped surface of a circular stepped part 25a. The radial passage 48, the axial passage 47, and a clearance 46 lead mutually and compose a curved road 45. |
