Genuine OEM Hyundai Brake Booster O-Ring, part number 1710007000. This O-ring is designed to seal components within the brake booster system, preventing vacuum leaks and ensuring proper brake assist function. It is a small but critical component, weighing approximately 0.05 kg with dimensions of 0.02m x 0.02m x 0.001m. Using a genuine OEM O-ring ensures the correct material composition and precise dimensions for a perfect seal, crucial for the safety and reliability of the braking system.