Pentair C/CC/D Series Trap Lid O-Ring [Pkg 184/184C] (3642220457) gridcontrols A focused replacement like this

A focused replacement like this is especially useful when the surrounding wet-end assembly remains serviceable and the weakness is isolated to the diffuser itself

When the spa is no longer heating the way it should

and 207A heaters

Once applied

Hayward booster pump impeller

Pentair C/CC/D Series Trap Lid O-Ring [Pkg 184/184C] (3642220457) gridcontrols A focused replacement like thisPentair C CC D Series Trap Lid O Ring [Pkg 184 184C] is a genuine Pentair sealing component designed for compatible pool and spa equipment. O rings and gaskets are small parts, but they play an important role in helping create a dependable seal between equipment surfaces. Replacing a flattened, brittle, stretched, or leaking seal can help reduce water loss, air intrusion, and service issues. This replacement part is useful for routine maintenance,