Hi there. I'm Michael with etrailer.com. Today, we're gonna take a quick look at this roll of butyl tape. This is a one inch wide by three 16ths of an inch thick 20 foot long roll of white butyl tape. It's gonna help to seal up your Marine or RV components like vents, windows, or doors. So this is gonna function as a gasket for a weatherproof seal.… see more >