UniFlor PPFEs are a family of fluorinated synthetic fluids that are used to formulate the most thermooxidatively stable lubricants available today. Available in a variety of viscosities, from very light for low-temperature, low-torque applications to very viscous for use as sealants or in more heavily loaded applications, PFPEs can be used "neat" as lubricating oils or combined with thickeners, typically polytetrafluoroethylene (PTFE), to make a variety of PFPE greases.