Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) presairtrol Matching the correct thermoplastic float-valve

Matching the correct thermoplastic float-valve style helps preserve intended fit and dependable operation

which can add an extra layer of operator awareness and control

The SherLok 160 fit and 26 inch relationship give this part practical value because internal filter components work best when they match the original size and assembly relationship closely

Because many pool and spa parts look similar but differ by size

A shaft like this is useful because it helps the bypass mechanism move and function properly

Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) presairtrol Matching the correct thermoplastic float-valveThe Hayward air relief O ring set is designed for compatible SwimClear and Pro Grid filter applications where the air relief assembly needs dependable sealing. O rings like these are useful because they help maintain a cleaner seal at the air relief point, supporting more reliable filter serviceability and operation. This quantity two replacement is especially useful when the original O rings are flattened, brittle, cracked, or leaking. Replacing them