The inner surface at one end of metal insert is cone-shaped sealing surface.
上述金属嵌件一端部的内表面为锥形的密封面。
Secondly, the flange gasket sealing ring has been replaced to ensure that the sealing face of sealing surface of the match.
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。
The file hard (60RC) high strength aluminum alloy lobe tube provides a smooth, corrosion-free abrasion-resistant sealing surface.
文件的硬（60RC）高强度铝合金叶管提供了一个平滑，无腐蚀耐磨密封面。
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