Polyimide Tube

Polyimide Tube is a flexible polymer tube combining excellent heat resistance, chemical inertness, and dielectric strength in a hollow form well suited to demanding insulation and structural applications. With a continuous service range from −270 °C to 250–320 °C and a heat-deflection temperature of 360 °C, it retains its properties across one of the widest thermal windows of any polymer tube material. Its dielectric strength of 22 kV/mm, volume resistivity of 10¹⁸ Ω·cm, and a UL 94 V-0 flammability rating support reliable performance in demanding electrical insulation duty, while a tensile strength of 70–150 MPa and good resistance to oils, greases, aromatic hydrocarbons, and halogenated hydrocarbons make it durable under both mechanical and chemical stress. Its high limiting oxygen index of 53% further reinforces its flame resistance in safety-critical applications. These combined properties make it the standard choice for wire and cable insulation in extreme environments, particularly in aerospace systems where weight savings, thermal endurance, and electrical safety are all design priorities. The tubular geometry also supports its use as structural components and protective jacketing in analytical instrumentation, where polyimide's combination of mechanical strength, dimensional stability, and dielectric performance allows it to insulate and bear load simultaneously.