3M™ EMI Shielding Fabric Tape CN-3190 10.32"X10" CU/NI FABRIC, 10 Sheets/Bag. 3M™ EMI Shielding Fabric Tape CN-3190 is a 4.3 mil thick, acrylic adhesive shielding tape. This tape is suitable for applications such as the grounding and EMI shielding of equipment, components and shielded rooms. It comes on a removable liner for easy die cutting and handling.