sealing cap

基本解释

The new sealing cap - similar to a smaller version of the damaged blow-out preventer - has three devices that are designed to shut the flow.
新的密封帽类似一个较小版本的损坏井喷防护装置，有三个旨在关闭流量的装置。
The oil giant said that the installation of a new sealing cap that is intended to capture more of the leaking oil from its well in the Gulf of Mexico is proceeding as planned.
这家石油巨头表示，在按计划更新控油罩，新控油罩将从墨西哥湾油井中收集更多原油。
"Over the next four to seven days, depending on how things go, we should get that sealing cap on. That's our plan," said Kent Wells, a BP senior vice president, of the round-the-clock operation.
英国石油公司高级副总裁肯特·威尔说：“在接下来的四至七天时间里，最关键的是我们必须按计划安装好新的防漏帽。”

In addition, the sealing cap will assist in the eventual killing of the oil.
WHITEHOUSE: Press Briefing
The Helix Producer, which was -- is not related to the sealing cap -- was coming online separately.
WHITEHOUSE: Press Briefing
So the sealing cap -- and I should stress here that this is not related to the containment architecture.
WHITEHOUSE: Press Briefing