3M Dual Lock Reclosable Fastener SJ3540 has a rubber based adhesive on the back of a black, polypropylene reclosable fastener. It's suitable for bonding many plastics, powder coated paints and other low surface energy materials. Our reclosable fastener has 40 mushroom shaped stems / cm² with a 5.8 mm engaged thickness.
Black, interlocking mushroom-shaped heads (250 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times
Mates with Type 170, Type 250 or Type 400 stem densities to provide different strength combinations
Strong fastener secures with an audible snap, verifying closure
An alternative to screws and bolts, this hidden fastener provides a snug fit and smooth aesthetic appearance
Features good temperature resistance of 140°F (60°C)