The JCB 20950579 Piston Seal is a genuine OEM component designed to maintain the hydraulic integrity of JCB machinery. This high-quality seal prevents fluid bypass within hydraulic cylinders, ensuring efficient and reliable operation. Manufactured to JCB's stringent specifications, it provides a precise fit and durable performance, crucial for the longevity and optimal function of your equipment's hydraulic systems. This seal is essential for repairing and maintaining hydraulic cylinders in a range of JCB models.