Eastwood Rubberized Rust Encapsulator Undercoating

"Rubberized" Rust Encapsulator stays flexible as it stops rust in its tracks
Unlike off-the-shelf under coatings, Rubberized Rust Encapsulator can be applied directly over rust and without the "bubbling" that creates air pockets thus trapping rust. Engineered with high-tech flex agents, and its pliable finish protects surfaces from abrasions, road hazards and deadens sound. So durable it exceeded 1,000 hours of salt spray chamber testing. Simply apply directly over rust or bare metal; no need to topcoat. Remains flexible and durable. Satin black finish.