Gaco 66B Deck Tape 4-Inch-by-120-Foot Polyester Seam Tape Polyester seam tape adds strength and flexibility Ideal for use on seams, joints, small cracks, vents, drains and flashing Applies quickly and easily Durable construction resists punctures, tears, UV rays, pooling water, and temperature extremes Measures 4-inches-by-120 feet