This would permit air to enter, breaking the hermetic seal of the jar.这会造成漏气，破坏罐子的密封性。The swimming goggles should create a tight seal around your eyes.这种游泳镜在眼眶处的密封性应当很好。The batteries are designed to be leak-proof and hermetically sealed.电池的设计防渗漏，密封性很好。