Pur Fill 1G is a most versatile foam! It's a moisture-curing foam that expands in place to bond and seal holes and gaps, stopping the passage of air, gases, water, dust, fibers, sound, rodents, pests, radon and odors. Our professional gun dispensers have the added features of complete control, no messy clean-ups or wasted foam. Pur Fill 1G is a real labor saving tool. *application gun not included