3M Dual Lock Reclosable Fasteners SJ3560, Type 250, Clear, 1/2 in x 50 yd, Industrial Use, Snaps Shut, Strong and Secure, Durable for Repeated Opening Closings, 1 Roll

3M SJ3560 Dual Lock 250 Reclosable Fastener is a general-purpose clear reclosable fastener with 250 stems per square inch, an engaged thickness of 0.23 inches (230 mils) and a closure life of 1,000. Type 250 stem density fasteners can mate to type 170, 250 or 400 fasteners (the higher the combined number the greater the closure strength). Mushroom-shaped stems on one side of the fastener interlock with identically shaped stems on the other side for 5X greater closure strength than hook and loop. Dual lock type 250 fasteners are designed to bond to metals, glass, and medium-to-high surface energy plastics and paint. They can replace conventional fasteners such as screws, clips, rivets, snaps, hook and loop and bolts in many applications where access or repositioning is needed. Dual lock only has one type of side; unlike products where there are a separate hook and a loop side; so rolls are typically cut in half and then mated or connected so a 10-foot roll would be used as two 5-foot strips. Carrier/Backing: polypropylene. Adhesive: acrylic (300 LSE). Release Liner: clear polyolefin film. Thickness: 140 mils (carrier, adhesive) 4 mils (liner). Service/Operating Temperature: up to 220F. Engaged Thickness: 230 mils. Pins: 250 per square inch.