Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg A manual reset hi-limit sensor

A manual reset hi-limit sensor is useful because it requires a deliberate reset after a high-limit event

4 inch size

Pump go-kits help support faster rebuilds for popular Dura Glas and Maxi Glas pump systems

FC-3129 Micro-Klean filter cartridge for compatible applications

An overlay is useful because it restores the visible button labels and surface appearance of the topside panel

Hayward Swimclear/Pro-Grid Air Relief O-Ring [Qty-2] (DEX2420Z8A) andersonmfg A manual reset hi-limit sensorThe 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