| 摘要 |
PURPOSE: A tandem booster having a center plate sealing device for a vehicle is provided to prevent a lubricant from leaking out of a pocket and to easily move forward and backward a valve body by preparing adhering units. CONSTITUTION: Plural pockets(81a) formed in a sealing member(80) are filled with a lubricant(A). The lubricant is for smooth forward and backward movement of a valve body(60). A first adhering unit(82) and a second adhering unit(83) are respectively formed at both sides of the sealing member. The adhering units adhere closely to the circumference of the valve body by being deformed elastically. Thus, the lubricant is prevented from leaking out of the pockets.
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