Our leak-proof sealants contain natural resins and curing agents. It can effectively resist temperature changes, provide lasting protection against weather factors, and can be used outdoors. Its use is simple: before applying the product directly to the repaired area, please clean the surface and area with the leak first, and then apply it two to three times after drying to achieve the best waterproof effect, and the product will have a good waterproof effect after completely drying. And it's leak-proof.