Braking 35 www.aftermarketonline.net MARCH 2026 FROMTHE WORLD’S NO.1 FRICTION EXPERT www.tmdfriction.com Avoid applying copper grease to brake pads Comline, the brand of choice for many aftermarket businesses and technicians around the world, is urging independent workshops to reconsider the use of copper-based grease on brake pads, as modern braking systems become ever more reliant on electronic sensors and precise component movement. While it is not a legal requirement, Comline’s brake pads have never contained copper in its friction formulation. As a result, the company earned the distinguished ‘N’-rated leaf mark from the Automotive Aftermarket Suppliers Association. However, while copper-free brake pads are becoming more common, some workshops continue to use copperbased greases during brake installation. It is this practice that Comline is now urging the trade to reconsider. While copper grease is commonly applied to reduce brake noise, it poses safety pitfalls: O Interference with ABS and ESP systems: While copper grease is electrically conductive, if it spreads onto wheel speed sensors or electronic components, it can disrupt signal transmission. This can cause ABS or ESP faults. O Restricted brake pad movement: Copper grease attracts brake dust and road debris. Over time, this accumulates into an abrasive paste that can stop brake pads from moving freely inside the caliper. This can lead to uneven wear, noise or brake binding. O Rubber seal deterioration: Most copper greases are petroleum-based and should not be used near rubber components. Prolonged contact can cause rubber seals and boots to swell, soften or crack. Comline supplies a comprehensive range of independently verified ECE R90-approved brake pads, alongside brake discs and calipers. Hot shear testing at 300°C, noise testing at varying speeds and pressure, AK master testing on a dynamometer and wear testing mean Comline is proud to offer its R90+ range. Visit www.comline. uk.com/braking for more information.
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