3M™ Flame Resistant Hook Fastener SJ3519FR is one part of a two-part fastener solution designed to provide great durability for thousands of closures. With its flame resistant rubber-based pressure sensitive adhesive backing, this fastener allows for easy and convenient attachment to a variety of substrates, including plastics. - Eliminating these additional application procedures creates simplicity, improved safety and lower installation costs. Pressure sensitive adhesive products can be applied manually or automatically using a variety of equipment choices.