When a hurricane looms, a new tape could soon help homeowners keep their walls from blowing apart. X Flex tape, a clear, Kevlar-reinforced tape tested and developed in conjunction with the U.S.

More than 30 years ago, the folks at DuPont brought Kevlar to the market — a lightweight, shock absorber that's most identified with bulletproof vests and car bumpers. Over the years, its applications ...