This high-vacuum grease performs over extremes of temperature and pressure and used as a highly reliable, low-friction lubricant in aerospace projects. It has a viscosity of 740 cSt @ 40 degrees C.This high-vacuum grease performs over extremes of temperature and pressure and used as a highly reliable, low-friction lubricant in aerospace projects. It has a viscosity of 740 cSt @ 40 degrees C.