Ten identical black rubber gaskets arranged in a scattered pattern on a white background
Pentair Pool Products and Parts

Pentair IntelliChlor O-Rings Pack of 10 | IntelliChlor Salt Chlorine Generator | 521147

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SKU:
521147

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About This Item

The Pentair IntelliChlor O-Rings (521147) are the OEM replacement gasket seals for the IntelliChlor salt chlorine generator series, sold as a pack of ten.

IMPORTANT: LUBRICATION REQUIRED — SOLD SEPARATELY
Always lubricate these O-rings with a silicone-based lubricant before installation. We carry the Pentair R172351 Lifeguard Silicone Lubricant — the OEM-matched product for Pentair equipment.

IMPORTANT: PACK QUANTITY — TEN O-RINGS PER PACK
This listing is for a pack of ten (10) IntelliChlor O-rings. Order accordingly for your service or maintenance needs.

These O-rings form the critical seals between the IntelliChlor cell housing connections. Worn, cracked, or distorted O-rings are a leading cause of salt cell leaks at union connections. Replacing them at each cell service interval keeps connections watertight and protects equipment from water intrusion.

Specifications

Pentair Part Number 521147
Part Name IntelliChlor O-Rings
Quantity Included Pack of 10
Part Type O-Ring

Poolaroo Pro Tip

Replace these O-rings every time you remove the IntelliChlor cell for cleaning or inspection — they are inexpensive insurance against leaks at reinstallation. Before seating each O-ring, apply a thin, even coat of Pentair R172351 Lifeguard Silicone Lubricant to prevent pinching and ensure a proper seal. Never use petroleum-based lubricants — they degrade rubber O-rings rapidly and will cause premature failure.

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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