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φ39*4.6 Sealing ring labyrinth seal
迷宫和O型圈配套使用.
检修时发现:失去弹性锈蚀变形翻边和老化,必须更换.
Mazes and O-rings are used together.
Maintenance found: loss of elasticity corrosion deformation flanging and aging, must be replaced.
