Complex sentence: Extruded fluoropolymer tubes such as FKM (Viton, Fluorel, etc.) have good compatibility with acids, hydrocarbons, and petroleum fuels, but the material has insufficient fatigue resistance to achieve an effective tube life.
Split into simpler sentences: Extruded fluoropolymer tubes such as FKM (Viton, Fluorel, etc.) have good compatibility with acids, hydrocarbons, and petroleum fuels. But the material has insufficient fatigue resistance to achieve an effective tube life.