Auto/Boat/RV Soundproofing Paint - $79 (Poulsbo)

Never opened Silent Running SR-500 (1 gallon) is a high performance coating specifically designed to eliminate unwanted sound and vibration.
SR-500 works by converting noise energy and vibrations into a low-grade heat, which is then dissipated throughout the applied surface.
Normally $130 https://www.
soundproofcow.
com/product/silent-running-1-gallon/