Homemade 651 rubber water-stop is of high quality natural rubber and various synthetic rubber as the main raw material, adding all kinds of promoter and filling agent, mixing, sulfide, classics plasticate, moulding and a water-stop product, made of 651 type rubber water-stop is using high elasticity of rubber, produce elastic deformation under various pressure load, thus have strong sealing, can effectively prevent the leakage of building structure, water seepage and shock absorption effect.In many countries in the design of large-scale engineering construction, civil engineering, water and soil structure has a certain scale, and there is waterproof and shockproof requirements, so use and install rubber water-stop is effectively solve various problems encountered in the above project.