This pipe removes the slurry, which is above the level into the seal box.

当水位高于密封箱时，管道就把浆液排出。

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The absorber is provided with a seal box to prevent slurry from overflowing into the flue gas inlet.

吸收塔配有防止浆液溢流到烟气侧的密封箱。

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The seal on the box broke when it fell from its hiding-place.

盒子从隐藏处掉下时上面的封口破了。

《柯林斯英汉双解大词典》

He had this shrink-wrap sealing machine that would seal three edges around a box with heat.

FORBES: Apple Does 1 Thing Other Companies Don't Do

Box and book together weigh as much as a pair of fur seal pups: 12.5 kilograms.

FORBES: Hint: It costs $2,900, and a seabird is the main character.