The axis seals uses the mechanical seal, is watertight, durable.
轴封采用机械密封，滴水不漏，经久耐用。
We would ask you to be careful to seal the case into a watertight bag.
我们要求你方务必注意的把这货装进密封袋里。
Then wrap the inlet pipes with Teflon tape to ensure a watertight seal.
用生料带缠绕进水管，以保证密封不漏水。
Watertight seal door is set on the dock and there is waterway out of the door.
该土坞设有止水密封坞门, 该门外设航道。
Discussion on the Technological Transformation of Watertight Seal of the Discus Type Butterflys Valve
浅谈铁饼型蝴蝶阀止水密封技术改造
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