The 18 FT 2-3/8 ID X 2 Wall Self-Seal Black Rubber Insulation Tube with Tape from Jones Stephens Corp is designed for effective thermal insulation in HVAC applications. This high-quality rubber insulation provides excellent thermal resistance, helping to maintain energy efficiency in heating and cooling systems. The self-sealing feature simplifies installation, ensuring a snug fit around pipes. With a diameter of 2-3/8 inches, it is suitable for various pipe sizes. This insulation tube is ideal for both residential and commercial use, providing reliable protection against heat loss and condensation.