Waterproof Insulating Sealant -- Efficient 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 Quality -- Made 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 Agent -- All 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.