| 摘要 |
A boot is installed to a shaft portion of a ball pin and slidably engages a joint case to seal between the ball pin and the joint case. The boot includes a slidably engaging portion, a connecting portion and a flexible portion. The slidably engaging portion slidably engages the joint case. The connecting portion is attached to the shaft portion of the ball pin. The flexible portion flexibly connects between the slidably engaging portion and the connecting portion. The slidably engaging portion includes an arcuate section and a flange section. The arcuate section has an arcuate cross section on an inner peripheral side of the slidably engaging portion. The flange section projects on an outer peripheral side of the slidably engaging portion.
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