Includes four (4) Fleck / Rainsoft #13305 O-Rings. The #13305 o-ring is found in Fleck/Rainsoft water softener valves. The #13305 o-ring is most commonly used in the below applications The 13305 o-ring is found in Fleck 2510, 5600, 9000, and 9100 Valves.
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