3M Hook & Loop (Velcro), Rubber Based Adhesive Attachment, Black

3M™ Hook Fastener SJ3530 is our better performing rubber-based hook fastener with a 3 mil (0.08mm) polyethylene film liner. It is an attachment alternative to a wide variety of closures, including zippers, screws, snaps, hooks and more. This fastener is covered with flexible J-shaped hooks, about 300 hooks per square inch (46 hooks/square cm.), which protrude up from a woven backing. Commonly paired with 3M™ Loop Fastener SJ3531, this hook fastener can also engage with other 3M™ Loop Fasteners. To ensure stability and flatness, both the hook and the corresponding loop are preshrunk.