lubricants for industrial and scientific purposes; oils, greases, waxes and oil-, grease-, or wax-based compounds used as lubricants and sealants in vacuum systems; waxes used in the manufacture of semiconductors as a mounting media and as a protective coating during etching processes; general purpose greases; laboratory and industrial vapor diffusion pump oils; diffusion-ejector pump oils

OILS AND GREASES, WHOLLY OR PARTLY OF PETROLEUM ORIGIN, HAVING VERY LOW VAPOR PRESSURES FOR USE AS LUBRICANTS, SEALING MATERIALS, AND OPERATING AND WORKING FLUIDS IN HIGH VACUUM AND OTHER EQUIMENT, FOR EXAMPLE, HIGH VACUUM PUMPS USED IN THE MANUFACTURING OF ELECTRIC LIGHTING GLOBES, X-RAY EQUIPMENT, ETC.