Pentair EQ Series Diffuser O-RIng (350037Z) vacalert The 25913-204 is a practical

The 25913-204 is a practical service part when a compatible plumbing system needs a 3-port diverter valve to restore dependable flow-routing support

and wet-side structure need renewal together

A fresh lid can restore both service confidence and the finished appearance of the filter assembly

Basket replacements are among the most practical maintenance parts because the original component often sees repeated handling and exposure over time

Pentair EQ Series Diffuser O-RIng (350037Z) vacalert The 25913-204 is a practicalThe Pentair 350037Z diffuser O ring is designed for compatible EQ Series pump applications where the diffuser sealing ring needs replacement. An O ring like this is useful because it helps seal the diffuser area within the wet end assembly, supporting cleaner internal fit and more dependable pump reassembly. Replacement is often needed when the original O ring is flattened, cut, hardened, or no longer dependable after disassembly. Installing the