Water injection sealing sealing device is working coal mine safety equipment commonly sold water sealing device, mainly for coal water, dust, falling coal pressure, cracking coal. Water sealing device compares the current technology, Carnival and other leading brands have obtained a patent rubber expansion pipe water sealing, a coal mine safety standard and ISO certified manufacturers. Rapid gas drainage water sealing device one: Usage: gas or water gas drainage. Two: Function: 1. Release the inner wall coal mining face close to the stress and soft coal seam gas ;; 2. Pre pumping gas as a regional conflict prevention measures to increase the security of construction workers; 3. atmospheric pressure can be achieved coal injection; 4. resolved when drilling gas outburst prevention overrun problems, can effectively prevent the outburst and explosion. Three: structural sealing device with a propeller jacket by locking device, the main bar, the expansion sleeve, gland, and Suction valve plug components. IV: Technical parameters sealing diameter: 50 ~ 100mm (according to user needs processing) sealing depth: 0.5m ~ 1.5m hose expansion coefficient: 10% to 30% water sealing device manufacturers _ _ Bo Harbin water sealing device Rubber-known manufacturers by Bo-Rubber Products Co., Ltd. Hengshui. Hengshui Bo-Rubber Products Co., Ltd. (www.jxboguang.com/) strong, credible, Hebei Hengshui transportation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Bo-Rubber and you hand into the brilliant, for a better future!