Pentair Packing Ring Set 2.75" x 3.25" | Berkeley | S13470 C4313 Match the part number stamped

Match the part number stamped or molded on your existing O-ring before ordering

Rubber bumpers are fitted to the ends to protect a vinyl liner where the ladder meets the side of the pool

The Pentair 521507 O-Ring for Container Lid is the OEM replacement seal for Pentair IntelliChem and IntellipH chemical dosing equipment

This O-ring seals the seal plate on the Dynamo pump

Laterals degrade at similar rates

Pentair Packing Ring Set 2.75" x 3.25" | Berkeley | S13470 C4313 Match the part number stampedOEM Replacement Packing Ring Set for Berkeley Impeller The Pentair S13470 is the OEM replacement packing ring set for Berkeley pump impellers, sized at 2. 75" x 3. 25". If your Berkeley pump is showing signs of seal wear or leakage at the impeller, this is the correct service part to restore proper operation. What It Does The packing ring set forms a compression seal around the impeller shaft, preventing water from bypassing the impeller and