UL GS30 Single Fiberglass Tube 300V, -60~+200oC Thermosetting insulation resistance of cold ,alkali ,oil passed VW-1. UL GS30 Single Fiberglass Tube 1)DescriptionNonminal Voltage ... ,Red,Orange, Yellow,White. 2)CharacteristicThermosetting insulation ,resistance of cold ,alkali ,oil ,which passed VW-1. 3)ApplicationUsage in thermal places ...