1) double flange rings (reversible type)
双重密封圈
2) double seals
双重密封
1.
Aimed at the insufficient seal problems of monolayer mechanical seal and flexible seal, the double seals are applied in four 5×104 floating roof ta nks at Zhenhai station and Baishawan stationof Yong-Hu-Ning crude oil pipeline.
针对浮顶油罐单层机械密封和软密封存在的不足,在甬-沪-宁原油管道镇海、白沙湾等站场新建的4座10万m3浮顶油罐上采用了双重密封。
3) double seal face
双重密封面
4) double taper sealing ring
双锥形密封圈
1.
The double taper sealing ring was designed and the seal between tubes and plate could be realized perfectly.
该结构采用双管板结构,可以方便地拆卸换热器、更换换热管等部件;采用双锥形密封圈,能很好地实现换热管与管板之间的密封。
5) liquid-filled double seal
充液式双重密封
1.
The structure and features of liquid-filled double seal used in floating roof tank are introduced.
介绍了充液式双重密封的结构和特点 ,并与运用较为广泛的泡沫软密封加挡雨板密封结构进行了油气损失对比。
6) dual inside and outside seal
双重内外密封
补充资料：双重
1.两层﹔两方面。多用于抽象事物。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条