Gear Aid's Seam Grip FC Fast Cure Seam Sealant is a fast-curing, water-based tent seam sealer. Formerly known as Seam Sure, one bottle of this waterproofing sealant seals up to 60 feet of seams or fabric. This liquid formula is perfect for family-sized tents, tarps and pop-ups made of nylon. Just apply a thin film to the inside seams and allow to dry to a clear, flexible seal. Don't let rain ruin an outdoor experience. Seal and waterproof tent seams in no time with Seam Grip FC Fast Cure Seam Sealant and stop leaks before they happen.Long-lasting: Water-based urethane sealant is unaffected by extreme temperatures and keeps moisture out all year longFast Acting: Formula cures in just two hours for an application on tent seams that's quick and easyWaterproof: Provides a water-tight seal that won't peel or crack over time, keeping adventurers warm and dryFlexible: Dries to a clear sealant that flexes with fabric and stays intact without flaking offAll-purpose: Seals nylon, polyester, vinyl, canvas and other outdoor fabricsMaterial: Water-based UrethaneA