Waterproof Insulating SealantEfficient leak prevention.This is a revolutionary formula based on water and rubber that can penetrate joints, cracks, and leaks and seal any cracked surfaces. At the same time, it forms a waterproof and protective coating in the adjacent area. Excellent QualityMade of high-quality materials, friendly to the human body and the environment, non-toxic. It has been tested and approved and has a long duration. It will not harm humans or surfaces. Save Money Help save time, money and energy because it can guarantee long-term protection after use. Can be used for through cracks, window sills, toilet, wall, external wall. Effective Repair AgentAll you have to do is "brush" the desired surface with glue, and you are done It immediately and effectively seals pipeline leaks on walls, ceilings, roofs, window sills, etc.