3M Dual Lock 400 Reclosable Fastener Black Acrylic Adhesive SJ3551 1 in x 10 ft

3M Dual Lock 400 Reclosable Fastener

This black reclosable fastener uses mushroom-shaped stems on a polypropylene carrier with an acrylic adhesive backing. It is designed for makers and technicians who need a strong, detachable bond without mechanical hardware. The Type 400 stem density provides 400 stems per square inch for reliable holding power.

Capacity and headroom with 1000 closure cycles

The fastener engages at a thickness of .23 inches and mates with Type 170, 250 or 400 counterparts for adjustable strength. It is rated for 1000 closure cycles before performance declines. It bonds to metals, glass and medium-to-high surface energy plastics, but will not adhere well to low-energy surfaces like polyethylene or polypropylene.

Build integration with acrylic adhesive backing

The pressure-sensitive adhesive allows direct application to prepared surfaces, removing the need for screws, rivets or bolts in many access-panel and signage tasks. It frees up design space by eliminating hardware clearance requirements. The roll format lets you cut custom lengths, though the fixed one-inch width may limit layout options for wider mounting needs.