Vespel® & Kapton® polyimide shapes are produced from advanced polymers developed by DuPont. Vespel® polyimide shapes are available to buy online - 杜邦高级工程塑料, VESPEL® polyimide combines High-Temperature Performance, Natural Lubricity, Dimensional Stability, Chemical Resistance, Creep Resistance, and more. Vespel® does not outgas or melt at any temperature & performs well in vacuum applications, even in extremely low cryogenic temperatures.