3 mil haigh strength self wound dead soft Aluminium 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 microweave ovens. High reflective assures effective heat, light interface, and electrical insulation shielding. 3 mil foil protects outdoor cable splices. Can be applied at low temperatures. Total thickness: 5.0 mil. Tensile: 28lbs/in. Elongation: 5.5%. Adhesion to steel: 55oz/in. Temperature range: -30ºF to 325ºF. Meets specs for SAE AMS-T23397. MIL-T-23397B, Type II printed in 3" core. UL723.

Mill:

• A "mil" is a unit of thickness equal to one thousandth of an inch. 
• To convert mil to inches take mil & divide by 1000. 
• Thus, a 2 mil bag would be .002 inches thick.
• Example: Ex: 2 mil/1000 =.002 inches