How do I cover gaps and cracks? Liquid Rubber Seam Tape is used to bridge gaps, cracks, seams, vents, protrusions….. Related articles What if I don't want black as my final color? Is this product good for adhering to wood. I'm looking to waterproof a 1/2 whiskey barrel for ponding ? Is Liquid Rubber Waterproof Sealant safe for drinking water? Is Liquid Rubber Waterproof Sealant environmentally friendly? Comments 0 comments Please sign in to leave a comment.