sealing wax 封蜡
airtight sealing 气密密封
rubber sealing 橡胶密封
waterproof sealing 防水密封
A: Is the sealing on this jar tight enough?
A：这个罐子的密封足够紧吗？
B: Yes, it is completely airtight.
B：是的，它是完全气密的。
1) 密封，封存
2) 密封件，密封材料
3) 盖章
1. 密封，封存，盖章
noun
1. The action of closing something tightly to prevent leakage or entry.