Can Flex Seal seal a hole?

I'm curious to know, can Flex Seal really seal a hole? I've heard of its ability to withstand harsh weather conditions and provide a durable barrier, but I'm skeptical of its effectiveness in patching up a leak or sealing a gap. Have you had any experience with Flex Seal and can you attest to its ability to seal a hole effectively? I'm looking for a reliable solution to my leak problem and want to make sure I'm investing in the right product.