SPECTROSIL

FUSED SILICA OR GLASS PRODUCTS FOR ELECTRICAL PURPOSES-NAMELY, POWER LINE INSULATORS, INSULATORS FOR ELECTROSTATIC MIST AND DUST PRECIPITATORS, RINGS FOR MERCURY RECTIFIERS AND MERCURY RECTIFIERS WITH TUBES; IGNITION BASINS, IGNITION CRUCIBLES, CRUCIBLE ELECTRIC FURNACES, RADIANT ELECTRIC HEATERS, MERCURY VAPOR AND OTHER GAS DISCHARGE LAMPS, VACUUM TIGHT SEALS FOR ELECTRICAL CONDUCTORS, IGNITION SPOONS, X-RAY ANALYSIS SPECIMEN TUBES, INSULATORS FOR RADIO AND OTHER HIGH FREQUENCY TUBES, ELECTRIC IMMERSION HEATERS, ELECTRIC LAMP GLOBES, CHIMNEYS AND REFLECTORS, TUBING FOR ELECTRIC FUSES, ELECTRIC CONDENSER INSULATION, HEATING ELEMENTS, CONDUIT MATERIAL, VACUUM TUBES, TRANSISTORS, TELEVISION INSULATORS, AND PARTS OF THE FOREGOING