接触密封 meaning in English

contact packing
contact seal
wiper seal

Regularly check whether actions of inhalation , exhalation discs are flexible , and the sealing contact surface of leader and disc is damaged , if so , should be replaced immediately
定期检查吸入、呼出阀盘动作是否灵活，导杆及阀盘接触密封面有无损坏，如有损坏应立即更换。
A labyrinth seal is a non - contacting circumferential seal utilizing a tortured path for flow between the stationary and rotating ( or reciprocating ) parts . the design utilizes a series of pressure drops to reduce the leakage
迷宫密封是一种通过曲折通道增大流动阻力来实现封严的非接触密封,通常用于密封气体,广泛应用于航空、能源、流体等领域的动力机械中。