Super-O-Lube is not a grease, but rather a high-viscosity silicone oil. It is especially useful as a seal lubricant. It can be used as an assembly lubricant on all rubber polymers, including silicones. It clings tenaciously to rubber or metal surfaces helping to prevent it from being flushed away by action of the system fluid. It has one of the widest temperature ranges of any seal lubricant available, with a range of -54 °C to 204 °C. It can be used for high pressure systems or in hard vacuum environments. Since there are no organic fillers, there can be no clogging of microfilters.