What is Liquid Rubber Seam Tape used for? Liquid Rubber Seam Tape is used for sealing gaps, cracks, joints, tears, flashings, skylights, gutters.... Related articles How do I cover gaps and cracks? How should I prepare the surface? Retail Locations Preformed polyethylene pond - will this product adhere sufficient to seal? Can I seam 2 pieces of epdm (rubber pond liner) with the Liquid Rubber Seam Tape? Comments 0 comments Please sign in to leave a comment.