I've used some on the bottom of my water containers. My thinking was to reinforce the thin plastic against abrasion. Not-so-much... This is not vulcanized rubber in a can, more like a type of flexible vinyl. >I am no chemist<
If you do not plan on using this as a boat hull or extending the life of your tires you may like it. It is a light duty, short term seal from what I can tell.