GB/T 15242.3-2021
ActiveDimensions series of rod and piston dynamic seals for hydraulic cylinders—Part 3:Dimensions and tolerances of groove for co-axial seals
液压缸活塞和活塞杆动密封装置尺寸系列 第3部分:同轴密封件沟槽尺寸系列和公差
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