Keep your Watts Big Bubba water filter system running smoothly with this genuine IPW Industries replacement coupler O-ring. Crafted from durable rubber, this small but essential part helps maintain a tight seal between the filter housing and coupler, preventing leaks and ensuring optimal water flow. Its precise fit is designed specifically for the Big Bubba system, ensuring compatibility and hassle-free installation. With this O-ring on hand, you can extend the life of your filter setup and enjoy fresh, clean water for years to come. Don't let a worn-out seal compromise your water quality - replace it with this authentic IPW Industries part.