Crafted with precision, the Cummins Ring Seal provides a reliable seal for rectangular O-Ring gasket connections in the 3902363 engine model. This genuine part, designated as item number 3936876, ensures compatibility and optimal performance for your engine components. Manufactured in the United States, this seal is an essential for maintaining the integrity of your engine's delicate systems. The seal is sold as a single unit, allowing for a straightforward replacement or addition to your maintenance supplies. Trust in the quality and expertise that comes with the Cummins brand, designed to meet the rigorous demands of heavy-duty equipment. Keep your engine running smoothly with this vital seal, a testament to durability and reliability in industrial applications.