This product is a low shrink temperature, flexible polyolefin heat shrink tubing that is safe for use in both auto and aircraft applications. It is used to insulate, protect, and provide strain relief for electronic wires and cables. The tubing has a 3:1 shrink ratio, meaning it shrinks up to one-third of its unheated diameter upon application of heat. The tubular sleeving is manufactured from polyolefin and is 9/3 mm in size. The black color helps provide a professional appearance for the finished product. The tubing offers excellent resistance to abrasion, chemicals, and temperature extremes, and provides a dependable waterproof seal. It fully recovers from hot air, flame, and mechanical abuse, making it an ideal choice for tough wire and cable applications.