This 12-foot self-sealing black rubber insulation tube features a 3-5/8" inner diameter and 2" wall thickness, designed for effective thermal insulation in HVAC applications. The self-sealing design simplifies installation, ensuring a tight fit around pipes to minimize heat loss. Made from high-quality rubber, it offers excellent durability and resistance to moisture and chemicals. This insulation tube is ideal for both residential and commercial use, providing energy efficiency and protection for piping systems. It comes with adhesive tape for easy application.