The Krowne 22-519 Stopper O-Ring For Lever Drain (3″ Opening) is a highly specialized component designed to ensure a watertight seal for lever drains with a 3-inch opening. This O-ring is crafted to fit most brands, making it a versatile choice for a wide range of installation scenarios within the plumbing and drainage industries. Its primary function is to provide a reliable, watertight seal, which is crucial in preventing leaks and maintaining efficient water management systems. This particular O-ring is essential for professionals in fields such as commercial kitchens, hospitality venues, and institutional facilities where maintaining a leak-free environment is critical. The Krowne 22-519 excels in its compatibility with various lever drain systems, offering a practical solution that supports both maintenance and new installations. By ensuring a secure fit and robust seal, it contributes to the longevity and reliability of drainage systems, reducing the need for frequent replacements or repairs. Its design focuses on durability and effectiveness, making it an indispensable component for those seeking dependable performance in their plumbing applications.