Krytox GPL oils and greases are based on perfluoropolyether (PFPE) oils. This series of synthetic fluorinated lubricants are used in extreme conditions, such as continuous high temperatures up to 260 °C (500 °F), and will survive short-term peak temperatures of up to 270 °C (518 °F). Chemically inert and safe for use around most chemicals, these lubricants are nonflammable and are also safe for use in oxygen service. Krytox oils and greases do not damage plastics or elastomers, nor cause corrosion to metals. They are commonly used as lubricants in aerospace, automotive, industrial, and semiconductor applications, as well as in solving many other routine lubrication problems. In addition, they provide exceptionally long lifetimes in sealed-for-life bearings and extend re-lubrication intervals in bearings that require re-lubrication.