Dual wall adhesive - lined heat - shrink polyolefin tubing with environmental sealing capability for a wide variety of electrical applications,including automotive and marine wire harness, wire splices, breakouts, and connector - to - cable transitions. Out jacket flame retardant, inner adhesive self - extinguished,super sealing against water, moisture or other contaminants. Contious operating temperature: -55C to 125C.Shrink temperature:120C.