Plasticizer resistant nylon hook fastener with plasticizer resistant PSA acrylic adhesive on a clear 3.5 mil polyethylene film liner. high HSE, low LSE. 3.1 mm engaged thickness. Mates with SJ3523, black. It's as simple as pressing together and pulling apart. When your product calls for thousands of easy openings and closings, 3M™ Scotchmate™ Reclosable Fasteners pull through for you. Tiny, stiff hooks mesh with pliable loops for quick secure faste