浮动油封是浮动密封的一种俗称，属于动密封中机械密封的一种，在多煤粉、泥沙、水气等恶劣的工作环境下具有超强的密封性能，是一种紧凑型的机械密封，主要用于低速重载场合。它具在耐磨、端面磨损后能自动补偿、工作可靠、结构简单等优点，在煤矿机械中得到广泛应用。如推土机行走机构、刮板输送机机头（尾）链轮组件、掘进机装载机构及悬臂段、连续采煤机左、右截割滚筒和减速器等。
并提出了修改国家现有浮动油封标准的建议。
Some modification to the current national standard of floating oil seals are also proposed.
研究了粉末热锻浮动油封密封环的材质、表面处理、显微组织对其耐磨性的影响。
The effects of material composition, working surface treatment and microstructure on wear resistance of powder hot-forging flow oil-seal ring were studied.
对浮动油封的结构及在采煤机上的应用效果进行了分析，提出了今后改进及发展趋势。
This paper analyses the structure of floating seal and its application effect in the shearer, raises improving and developing tendency of floating seal.
应用推荐