INSULATING MATERIAL USED IN HIGH VACUUM, ION INJECTION, CHEMICAL VAPOR DEPOSITION AND X-RAY APPARATI, AND ELECTRON MICROSCOPES; INSULATING MATERIAL FOR ELECTRON, CATHODE RAY AND DISCHARGE TUBES, AND HALOGEN VALVES; INSULATING MATERIAL FOR INTEGRATED CIRCUIT MANUFACTURING EQUIPMENT; INSULATING MATERIAL FOR SPACE TECHNOLOGY OR NUCLEAR REACTOR EQUIPMENT; INSULATING MATERIAL FOR CAMERAS, MEASURING AND ANALYSIS EQUIPMENT; INSULATING MATERIAL FOR CONTAINERS USED IN LOW OR HIGH TEMPERATURE ENVIRONME...