Flex Seal is not a miracle product. It will not work on everything. In fact, there are several things that you should not use Flex Seal on.
1. Flex Seal is not for use on electrical wiring or outlets. The chemicals in the sealant can be conductive and create a fire hazard.
2. Do not use Flex Seal on anything that comes into contact with food or drink. The chemicals in the sealant can leach into your food and water, making them unsafe to consume.
3. Avoid using Flex Seal on car parts, particularly brake lines and fuel lines. The chemicals in the sealant can react with other fluids in your car and cause damage or even explosions.
4. Do not use Flex Seal around open flames or near heat sources such as radiators or space heaters. The fumes from the sealant are flammable and could ignite, causing a fire hazard.