self-sealing oil seal

例句：

1. 1. The self-sealing oil seal prevents leaks during the assembly process.
   自封油封在组装过程中防止泄漏。
2. 2. The self-sealing gasket is a crucial component of the new car's engine.
   自封垫圈是新汽车发动机的关键部件。
3. 3. The self-sealing ring ensures that the joint is airtight and secure.
   自封环确保接头是密封的并且安全。