At HOBA, we have invested over a decade in refining our rubber recipe for brake seals, brake caliper seals, brake boots, and brake cups to ensure not only superior product quality but also exceptional performance. Our approach starts with the creation of a basic formula, carefully designed by selecting the most compatible elements based on the polarity of brake fluid. This formula includes EPDM, Zinc Oxide, Stearic acid, and other essential auxiliaries to ensure optimal compatibility and functionality in demanding environments. To further enhance the performance of our EPDM brake rubber products, we incorporate a special formula with additional rubber auxiliaries. This allows us to boost resistance to brake fluid, improve compression resilience, and deliver anti-aging and tensile strength properties. These innovations ensure that every brake seal and caliper seal we manufacture meets and exceeds the expectations of our customers, especially in applications requiring high performance and durability, such as heavy-duty automotive brake systems. With this combination of basic and performance-enhancing formulas, HOBA's rubber products including brake seals, brake boots, and brake cups are designed for long-lasting reliability and safety.