Request InfoMolex, FiberguideFiberguide Industries Inc. offers a full line of standard optical fibers with polyimide coating. Providing optimal performance of fiber optics in extreme thermal conditions, the coating accommodates oil and gas, aerospace, sensors, defense, and medical and security applications requiring high temperature resistance. It withstands operating temperatures of up to 400 °C (300 °C continuous), while conventional coatings such as acrylate, nylon and Tefzel begin to deteriorate between 100 and 250 °C. 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