Characteristics:
Synthetic oil (perfluoropolyether PFPE, free of additives). Chemically inert. Highest thermal stability. H1, HX-1, H2, HX-2 registered by NSF. 

Examples of use:
Pumping of strong oxidants like oxygen, ozone or nitrous oxides, as well as reactive substances like halogens, hydrogen halides and conditionally Lewis acids.

Product examples:
RUVAC, E+DK, DRYVAC, ECODRY Plus, LEYVAC