Seam Grip + FC Tent Seam Sealant seals and waterproofs seams on all kinds of gear. It is perfect for family-sized tents, tarps and pop-ups. Just apply a thin film to the inside seams and let dry. In rainy weather, tent seams are notorious for leaking, dripping and generally wrecking the whole outdoor experience. But not when they’re coated with Gear Aid’s Seam Grip + FC Tent Seam Sealant seam sealer.