| 摘要 |
PROBLEM TO BE SOLVED: To prevent time coming off of an oil seal by the inferiority of an elastic body. SOLUTION: An oil seal 6 has a rubber 6R and a metal ring 6M and a rubber ring 6R with a lip including a spring S formed in a ring shape is formed in a shape inserted to the metal ring 6M by cutting off one outer periphery corner angle of the rubber ring 6R and is pressed in and fitted so that the oil seal end surface on which the metal ring 6M is exposed can be pointed to the outside for the fitted hollow part H0 of a pump housing 1a. Further, a jointed part P is installed by calking the fitted hollow part H0 and tightly close effect is improved by reducing the coming off of the rubber 6R by interiority. |
