3M™ Hook Fastener SJ3526N is one part of a two-part fastener solution designed to provide great durability for thousands of closures. With its high performance rubber-based pressure sensitive adhesive backing, this fastener allows for easy and convenient attachment to a variety of substrates, including plastics. - Hook fastener backed with a high performance rubber based adhesive designed for indoor applications requiring medium temperature resistance. Woven nylon is durable for thousands of closures.