Acid Washing Kit, Pentair IntelliChlor | 520670

Used to plug the end of the chlorinator and pour acid directly into it This reduces the amount of acid required to clean the blades.

For O-ring Replacement See: . 90-423-5229V – O-Ring, Buna-N, 2-3/8″ ID, 1/8″ Cross Section, Generic, Viton