Thermoset polyimides are produced in condensation polymers that possess reactive terminal groups capable of subsequent cross-linking through an addition reaction. They are known for thermal stability, good chemical resistance, excellent mechanical properties, and exhibit very low creep and high tensile strength. Polyimides are also inherently resistant to flame combustion and do not usually need to be mixed with flame retardants. Most carry a UL rating of VTM-0.
Electronics, medical tubing, adhesives, gears, covers, bushings, piston rings, and valve seats.