Home / Standards / GB/T 15242.4-94 GB/T 15242.4-94 Hydraulic fluid power—Cylinder piston and piston rod dynamic sealing device—Support ring installation groove dimensions series and tolerances 液压缸活塞和活塞杆动密封装置用支承环安装沟槽尺寸系列和公差 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A