Miller-Stephenson Vertrel® XF MS-782 Cleaning Agent Clear is a hyrdrofluorcarbon liquid that is used for removing, rinsing, and cleaning residue from metal and non-metal components. It also removes PTFE release agents and PFPE oils and greases. It is nonflammable, low viscosity, low surface tension, high density, and evaporates quickly. 1 qt Bottle.