Gear Aid Seam Grip + TF Tent Fabric Sealant Seal up to 85 sq. ft. of nylon tent floors, rainflies and tarps with this tent sealer; previously known as Tent Sure Restore old PU coatings that are flaking, sticky or degrading with this effective tent waterproofing and seam sealer Dries to a long-lasting coating that is nearly invisible and flexes with nylon Provides a water-tight seal that will keep you dry in the rain Packaging may vary Polyurethane (PU) coating for waterproofing outdoor fabrics like tents and awnings Concentrated 4 oz bottle waterproofs up to 85 sq. ft Replaces old PU coatings and restore tent flies and floors to like new performance Use on tent floors, rain flies, awnings, and more to restore water repellency Built-in foam brush makes application easy leaving a clear, flexible finish