The leakproof hydraulic damper is mainly composed of an inner cylinder, an outer cylinder, a piston which is provided with one-way valves, overflow members, adjustment rings, seal rings, etc.
它主要由内筒、外筒、带有单向阀的活塞、溢流件、调节环，密封圈等组成。
2
The upper end of the leakproof valve is provided with a leakproof valve seal ring, and a seal ring is arranged between the water faucet and the liner.