试验结果表明，导致密封失效的主要原因是后端盖刚度设计过低。
Tests indicate that main cause for sealing failure is that rigidity of the rear cover is too low.
设计的一种气体保护填料迷宫组合密封结构可以解决粉体介质密封因粉体颗粒进入密封装置引起密封表面磨损导致密封失效问题。
A gas protection seal for powder was designed to solve the problem that powder into seal makes seal surface wore, which results in seal failure.
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