Pentair Water Pool and Spa Inc O-Ring #338 - R170055

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This is the Pentair Water Pool and Spa Inc O-Ring #338, part number R170055.O-rings create the watertight seal between mating parts. Replacing a worn, cracked or flattened o-ring s tops leaks and prevents air from being drawn into the system.Designed for use with Pool/Spa Pumps.Please confirm the part number matches your existing equipment before ordering. Show more