metal O-ring and nonmetallic O-ring seal

例句：

1. 1.The metal O-ring is used to prevent leaks in the pipeline.
   金属O形圈用于防止管道泄漏。
2. 2. The nonmetallic O-ring is used to provide a tight seal around the joint.
   非金属材料O形圈用于提供接头处的紧密密封。
3. 3. The engineer carefully selected the right materials for the metal O-ring and nonmetallic O-ring seal.
   工程师仔细选择了适合金属O形圈和非金属材料O形圈密封的材料。