法兰密封面应平整清洁，安装时要认真清理油污和锈斑。
The flange sealing surface should be smooth and clean, to seriously clean up oil and rust during installation.
当用软垫片的时候，法兰密封面要按相应标准加工成水线。
Flange facing finish shall be serrated finish in accordance with applied standard in case of soft gasket.
组件所有外露接口均设有防护堵、盖，且封闭良好，接口螺纹和法兰密封面无损伤；
All accessory interfaces should have protection covers with good sealing, there is no damage on the connecting screws and flange sealing surface.
本文以确保螺旋体法兰密封面的密封性能为前提，讨论了一种用以确定可拆螺旋板式换热器大平盖螺栓预紧力的估算方法。
This paper is based on the sealing reliability of flange for the DSHE and submits a predicting calculation' s method of the bolt for seating gasket used in circular-shaped cover of the DSHE.
警告：用于阀体法兰上的隔膜的密封面在工厂受到特殊的处理，以强化聚四氟乙烯隔膜的密封性能。
Caution: the sealing surface for the diaphragm on the top flange of the valve body receives special factory preparation to enhance sealing with PTFE diaphragms.
ANSI法兰的密封原理极其简单：螺栓的两个密封面相互挤压法兰垫片并形成密封。
ANSI flange sealing principle is very simple: bolt two seal face mutual extruding flange gaskets and formed the seal.
ANSI法兰的密封原理极其简单：螺栓的两个密封面相互挤压法兰垫片并形成密封。
ANSI flange sealing principle is extremely simple: the two bolts each other extrusion flange sealing surface and form a seal gasket.
其次，法兰垫片已被密封环所代替，以确保密封面对密封面的匹配。
Secondly, the flange gasket sealing ring has been replaced to ensure that the sealing face of sealing surface of the match.
紧凑法兰尺寸之所以减小，是由于减小了密封件的直径，这将会减小密封面的截面。
The reason why reducing the size of a compact flange, as a result of reduced diameter seals, which will reduce the sealing surface of the section.
J 41 n型PN 40钢制截止阀：手动、法兰连接、直通式、阀座密封面材料为尼龙塑料、公称压力pn 40、阀体材料为碳素钢的截止阀。
J41N Type PN40 steel globe valves: manual, flanged, straight-through, the valve seat sealing surface material as nylon plastic, nominal pressure PN40, carbon steel valve body material cut-off valve.
煤气阀门的密封面，石油机械、管接头密封面、装配法兰等。
Sealed surface of gas valve, patrol machines, and installation flange.
煤气阀门的密封面，石油机械、管接头密封面、装配法兰等。
Sealed surface of gas valve, patrol machines, and installation flange.
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