Sold individually. A leaking seal can turn a smooth-running engine into a maintenance headache. The Mercury Seal (26-812889) is built to stop that problem before it starts. Designed to keep water, debris, and contaminants out, this precision-crafted seal plays a crucial role in protecting key engine components from wear and failure. Whether tackling saltwater conditions or demanding freshwater runs, this durable part ensures a secure, leak-proof fit for Mercury outboards and sterndrives.. Why It Matters:. Reliable Protection - Forms a tight barrier to block out moisture and debris.. OEM-Quality Fit - Manufactured to Mercury's exact standards for a perfect seal.. Built for Marine Environments - Resists heat, pressure, and corrosion for long-lasting performance.. Ideal for:. Replacing worn or damaged seals to prevent leaks.. Maintaining optimal engine efficiency and longevity.. Ensuring smooth operation in all marine conditions.. A bad seal can lead to costly repairs, but a high-quality