Dual Wall Adhesive Lined Heat Shrink Tubing bonds to plastics, rubber, copper, steel, neoprene, and polyethylene to seal out water and contaminants. Ideal for a variety of applications including automotive and marine wire harness bundles, industrial splices, breakouts, and connector to cable transitions. Medium duty. Flame retardant. 3 to 1 shrink ratio. Shrink temperature 120°C, continuous operating temperature -55°C to 110°C.