cap gasket

例句：

1. 1. The cap gasket is used to prevent leakage during the assembly process.
   盖垫圈用于在装配过程中防止泄漏。
2. 2. The engineer carefully checked the cap gasket before starting the machine.
   工程师在启动机器前仔细检查了盖垫圈。
3. 3. The cap gasket was replaced after the engine overheated due to a faulty seal.
   由于密封不严导致发动机过热后，更换了盖垫圈。