3M(TM) Fastener SJ3522 is a plasticizer resistant nylon hook fastener with plasticizer resistant PSA acrylic adhesive on a clear 3.5 mil polyethylene film liner. high HSE, low LSE. 3.1 mm engaged thickness. Mates with SJ3523, black. This product is coated with a plasticizer resistant acrylic adhesive. Medium temperature performance. Bonds well to paint, bare and painted metal, glass, sealed wood and many plastics. Designed for indoor use.