Its relative wear rate is 1/20 the rate of PTFE below 300°F (150°C) making it an excellent choice for aggressive service bearings and bushings.5 W Fluorosint is Now Available in 5 Grades: Fluorosint® 207 - Lowest Coefficient of Friction of all Fluorosint Grades Fluorosint® 500 - Exceptional Dimensional Stability for Precise Tolerance Control Fluorosint® HPV - Most Wear Resistant Fluorosint Grade - Outlasts Low-tech PTFE Based Materials Fluorosint® 135 - Superior Performance Grade For Stability In Extreme Conditions Fluorosint® MT-01 - Ultra-High Performance Fluorosint Grade For Stability At Elevated Temperature It is non-permeable in steam and complies with the FDA's regulation 21 CFR 175.300..