AF-30SW Self Wound, Acrylic Adhesive 3 mil high strength self wound dead soft aluminum foil coated with an aggressive acrylic adhesive system to create a superior bond. Designed to stick firmly to its own backing. Malleable foil conforms well to irregular surfaces. Premier product for masking in paint stripping and electroplating. Used for waterproofing, vapor barrier and air leakage protection, metal patching and sound dampening, as a sealing system in refrigerated appliances and microwave ovens. High reflectivity assures effective heat, light interference, and electrical insulation shielding. 3 mil foil protects outdoor cable splices. Can be applied at low temperatures. Total Thickness: 4.8 mil. Adhesion to Steel: 40 oz/in. Tensile: 36 lbs/in. Elongation: 5%. Temperature Range: -58F to 302F. 3" core.