Fire Safe - Secondary metal-to-metal seal ACTS as backup if primary seal is destroyed by fire.

防火安全-如果第一个密封被火烧坏，则第二个金属对金属密封作为后备密封发挥作用。

youdao

And the deployment of fire extinguishing force for seal ring fire and floating roof explosion fire was emphasized.

重点对密封圈火灾和浮顶爆炸火灾的火灾力量部署进行分析确定。

youdao

Applicable to all kinds of contact with the atmosphere, sunlight, ozone environment and a variety of fire resistance, chemical corrosion resistance of the seal.

适用于各种接触大气、阳光、臭氧的环境及各种耐燃、耐化学腐蚀的密封环节。

youdao

Monsoor "ran out into the street with another SEAL, shot cover fire and dragged his comrade to safety while enemy bullets kicked up the concrete at their feet, " according to Navy documents.

CNN: Navy SEAL paid ultimate price to save buddies

About 100 police and fire brigade officers were involved in the operation to seal the street and investigate.

CNN: Police calm German anthrax fears