Ensure optimal performance and leak-free operation in your heavy-duty equipment with the genuine Cummins 3968569 Piston Seal. Expertly engineered for maximum durability, this advanced composite sealing ring features a robust multi-layer design. It incorporates a black elastomeric outer band for superior adaptability, a fabric-reinforced middle layer to withstand high pressures, and a low-friction white PTFE inner ring equipped with precise locating notches for secure installation. Specifically designed for demanding hydraulic and engine sealing applications, this OEM replacement part guarantees an exact fit, reducing wear and restoring your engine’s efficiency to factory standards.