Dual wall heat shrink tubing protects against moisture and corrosive environments, while providing electrical insulation and mechanical protection using engineered adhesives. Dual wall tubing products consist of a crosslinked outer jacket and an inner layer of adhesive or encapsulant. During installation, the adhesive or encapsulant lining melts and flows, creating a moisture-resistant protective barrier. Benefits of this type of tubing include controlled amounts of adhesive and consistent results; compliance with AMS-DTL-23053 standards; and RoHS Compliant.