Abstract: In order to make the seal reliability of the hydraulic powered support, the paper introduced the sealing status at home and abroad with the common seal structures, sealing element type, related industrial standards applied to the domestic hydraulic powered supports.The paper analyzed the certain conditions of the dome stic sealing parts production method and market and discussed the management level of the seal industry. The paper provided the periodical revise on the sealing stand ards of the hydraulic powered supports.The implementation of the standards and the products inspection shall be enhanced.The management method and the standardi zed principle of the seal certification and the authorized inspection mechanism shall be established for the hydraulic powered support.