Technical parameters sealing diameter: 30-120mm (according to user demand for processing) Working Pressure: 1-8Mpa (according to user needs processing) starting pressure relief valve: 0.4-0.5Mpa work flow: 4-4.5 tons of water per hour ( Seam sealing water pipe water swelling rubber sealing device, a coal injection grouting sealing device) sealing depth: 1M-8M hose expansion coefficient: 60% -100% service system 1, in order to ensure high reliability and product nature of water sealing device, selection systems are made of high quality brand-name domestic or international. 2, the product performance testing mine water sealing device, we sincerely invited users to visit the whole process of the product, all performance checks, was confirmed to be qualified before packing shipments. 3, in the same competitive conditions, our company not to reduce product on the basis of technical performance, change the product on the cost of parts, in good faith in the most favorable price to your party. Gas drainage water sealing device | injection sealing device | Bo-Bo-Rubber provided by Hengshui Rubber Products Limited. 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!