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PFAS, often called “forever chemicals,” are man-made compounds that barely break down over time. They’ve been widely used in industry because they resist chemicals, repel water, and repel oil—properties that made them seem essential for many manufacturing processes.

PFAS’s fluorocarbon structure allowed them to create an extremely stable, low-friction layer on metal surfaces. This protective film played a key role in reducing friction, minimizing wear, and improving precision under the extreme temperatures and pressures found in industries like aerospace, medical devices, and other high-precision machining. Compounds such as PFOS (Perfluorooctane Sulfonate) and PFOA (Perfluorooctanoic Acid) were once essential ingredients in many formulations, providing both lubrication and corrosion protection.

PFAS are extremely persistent in the environment and barely break down over time. When metalworking waste fluids, coolants, or rinse waters are released, these chemicals can easily enter rivers, soil, and groundwater. Over time, they accumulate in ecosystems, creating long-term environmental risks.

At the same time, regulatory and health pressures are mounting. Agencies like the U.S. EPA have classified key PFAS compounds under the Toxic Substances Control Act, limiting their use and pushing for safer alternatives. The European Union has introduced similar restrictions under the Stockholm Convention. Studies have also linked prolonged PFAS exposure to serious health concerns, including hormone disruption, weakened immune function, and higher risks of certain cancers. Together, these environmental, regulatory, and health factors are driving the metalworking industry to urgently seek reliable PFAS-free solutions.

Advanced PFAS-Free Alternatives
■ Plant-Based Lubricants: Made from natural oils, these fluids are more biodegradable and environmentally friendly, while still providing excellent lubrication performance.
■ Synthetic Ester Lubricants: Engineered for high thermal stability and anti-wear protection, these alternatives meet demanding machining requirements without using fluorinated compounds.
■ Industry Trends: Although cost and full-scale validation remain challenges, manufacturers are rapidly developing high-stability, PFAS-free solutions that balance machining efficiency with environmental responsibility.