| 摘要 |
A sealed master cylinder and plunger of a vehicle hydraulic-brake system, includes a master cylinder, a plunger and a seal collar. The master cylinder is adjacent the plunger and has a holding slot disposed thereon and adjacent the plunger, and the seal collar provided in the holding slot. The seal collar comprises a collar body, separated into a circumferential inner wall and a circumferential outer wall, both of which are pliable. The sealed master cylinder and plunger further comprises a first fluid passage formed between the circumferential inner wall and the plunger and a second fluid passage formed between the circumferential outer wall and the holding slot.
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