Altemp Q NB 50 50 High Temperature and Long Term Grease ALTEMP Q NB 50 grease is ideal for rolling bearings, water resistant, extremely stable to oxidation, not aggressive to most elastomers and plastics, not corrosive to ferrous or non-ferrous metals, resistant to most chemicals and organic solvents, also to chlorinated hydrocarbon solvents. Not resistant to fluorinated hydrocarbon solvents. Suitable for bearings on conveyors and automatic baking ovens, ball bearings in clip chains on textile machines, rolling bearings in electric motors.