The Fluval FX5-6 aquastop valve and 2-piece O-ring are suitable for the Fluval FX5 and FX6 High Performance Filters (model numbers A218 and A219). The aquastop valve and O-ring are important components for maintaining a tight seal and preventing leaks in the canister filter system.
When replacing parts or performing maintenance on your Fluval FX5 or FX6 filter, it's recommended to use genuine Fluval replacement parts to ensure proper fit and compatibility. The Fluval FX5-6 aquastop valve and 2-piece O-ring are specifically designed for these filters and will help maintain the optimal performance of your filtration system.