Rubber Sealing modify rubber water stop and rubber-based sealing natural rubber and synthetic rubber as the main raw material, mixed with various additives and fillers, the mastication, mixing, forming limit, the type specification than the more, a bridge type, mountain-type, P, U-shaped, Z-type, B, T, H-type, E-type, Q type. According to the use case can be classified as buried rubber water stop and backing with rubber water stop. The sealing material has excellent elasticity, abrasion resistance, aging resistance and tear function, diet modification ability, waterproof function is good, the temperature operating range of -45 ℃ -. + 60 ℃ when the temperature exceed 70 ℃, and When the rubber water stop by the intense oxidation or corrosion by oils and other organic solvents are not allowed to use rubber water stop. Often through the use of the basement wall and after pouring belt construction. Rubber water-use way to modify required to adopt robust fixed way, when steel banding and formwork. Avoid the onset of displacement in the pouring of concrete to ensure that the exact location of waterstops in concrete. Only on water-stop site promised perforation holes on fixed water-stop. Do not damage the water stop waterproof helpful site. December 31, 2014, AQSIQ, the State Standardization Committee in 2014 to handle No. 33 bulletin released a composite rubber national referral norms "composite rubber common technical standards" to regulate the number of GB / T 31357-2014. The specification will be officially implemented on July 1, the current transition period. The specification of the most important is the introduction of a composite rubber gum content does not exceed 88% rule, after this rule has led to widespread controversy occupation. The specification was developed by the National Rubber and rubber products standardization natural rubber points Skills Council Skills Council (SAC / TC 35 / SC 8) centralized. Drafted by: Institute of Agro Chinese Academy of Tropical Agriculture, Hainan State Farms base station testing, People's Republic of China Huangpu Exit Inspection and Quarantine, Shun Ho Hangzhou Rubber Engineering Co., Ltd., China National Petroleum Petroleum Chemical Research Institute Co., Ltd., Hainan natural Rubber Industry Group Co., Ltd., Yunnan Agricultural Reclamation Group Co., Ltd., Guangdong Province, widely cultivated Rubber Group Co., China Chemical Rubber Co., Ltd.