3M Tubing & Molded Parts product (catalog number BBI7ARD20') is a heavy-duty heat shrink tubing made of polyolefin material. It has an overall length of 20 ft (6.1 m) and can withstand a maximum operating temperature of 110 ℃ (230 ℉). The tubing is orange or red in color and has a shrink ratio of 1.5 : 1. It is suitable for use in bus bar applications with voltages ranging from 5 kV to 35 kV. The product is rectangular, round, and square in shape, with various size options available. It is not halogen-free and does not have UL approval. The recovered wall thickness is 0.13 in (0.33 cm) and the expanded wall thickness is 0.048 in (0.12 cm). The inner diameter before shrink ranges from 13 in (33 cm) to 8.28 in (21 cm), and the maximum recovered tubing inner diameter is 2.55 in (6.5 cm). Temperature operating range is -55 °C to 110 °C (-67 °F to 230 °F). - 7100025926