In another installation of "We Try It Before You Buy It" News 8's Shannon Moss tests out Flex Seal. It's the spray rubber that claims to stop any leak. We put that claim to the test with a home builder in Kennebunkport. Source: WMTW-TV Here is the detailed Rust Oleum Leak Seal vs. Flex Seal Comparison you may also like: https://outdoorfact.com/rust-oleum-leak-seal-vs-flex-seal
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