The Pentair 35505-0421 O-Ring is an essential replacement component for pool contractors servicing Sta-Rite Cast Iron Suction Trap Assemblies in commercial pool and spa installations. This precision-engineered lid O-ring ensures reliable sealing for CSP/CSPH strainer pots, preventing costly downtime and maintaining optimal pump performance.

Commercial Service Benefits

Designed specifically for commercial applications including PKG No. 184, 184C, 184E, and 184CE pump assemblies, this O-ring reduces service callbacks and maintains professional installation standards. The 13-1/2" outer diameter and 3/8" thickness provide the exact specifications needed for proper sealing, ensuring your commercial pool systems operate efficiently.

Why Pool Contractors Choose MT Pools

With our superior customer service and daily recurring customer support, you get reliable access to critical replacement parts when you need them. Our wholesale pricing structure supports your service profit margins while our extensive inventory ensures you can complete repairs without delays.

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Keep your commercial pool service operations running efficiently with genuine Pentair replacement parts. Our team provides expert technical support and fast delivery for pool contractors nationwide.