Synthetic Grass Warehouse TAPE 12" W x 328' Roll Seam Tape for Synthetic Turf Application. Ideal for synthetic turf projects installed on hard surfaces, our seam tape features as a double-sided non-adhesive, 12 inches wide and works great for any synthetic turf seaming process. Seaming tape is available at any custom length with a maximum length of 328 feet per roll. This tape can also be applied in conjunction with turf adhesive. The adhesive should be applied to the dull side of the tape.