... Polyetherimide PEI Ultem Heat resistance, flame resistance, transparent (amber color) Electrical components (connectors, boards, switches), covers, sheilds, surgical tools Polyethylene - ... absorption, electroplating capability, high cost Automotive (housings, panels), electrical components, housings, plumbing components Polyphenylene Sulphide PPSRyton, Fortron Very high strength, heat resistance ...