This very high-quality and extremely high-performance Ultratherm series for roller and plain bearings represents the most thermally and chemically stable products currently available on the lubricant market. PFPE ultra-high vacuum greases up to 10-9 mbar are oxidation and temperature stable from -60 ° C to approx. 250 ° C. They offer excellent elastomer compatibility, very high-pressure resistance, and extremely low evaporation losses.