| 摘要 |
PROBLEM TO BE SOLVED: To improve the sealability by making the seal bearing pressure of a seal lip sharp, and to prevent the seal lip from being abnormally deformed in inserting a shaft. SOLUTION: An inner diameter of a seal part face 5A is smaller than an outer peripheral diameter of the shaft, an expansion taper face 4 is expanded by an outer diameter of an inclined supporting part 12 of a supporting ring 10, the inner diameter of the seal part face 5A is also expanded, and a seal corner part 5A3 has a dimension capable of being closely abutted on the shaft. |
