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Has a non-woven material on the back of a black, polypropylene reclosable fastener. 3M Dual Lock Reclosable Fastener SJ3445 has 250 stems per square inch with an engaged thickness of 0.28 inch. The closure life is 1,000 times. Use with a variety of 3M hot melt or liquid adhesives. 3M Dual Lock Reclosable Fastener can be bonded to wood, foam, fabric or similar materials. It has good temperature performance, with temperature resistance from 158 degrees Fahrenheit to 200 degrees Fahrenheit, depending upon adhesive selected.

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