Product Overview

The 568-229V Viton O-Ring Pair Set is designed to replace worn, flattened, cracked, or leaking seals used in compatible Pentair salt cell union connections. These replacement O-rings install between the salt chlorine generator cell and the plumbing union tailpieces, helping restore a secure, watertight connection.

The set includes two O-rings, providing the seals needed for both the inlet and outlet sides of one compatible salt cell. Viton fluorocarbon material provides excellent resistance to pool chemicals, elevated temperatures, ozone, and environmental exposure. This makes the set a durable alternative to standard rubber seals in demanding pool equipment applications.

These O-rings are commonly used with Pentair IntelliChlor-style salt cell unions, including union assemblies such as Pentair part number 520595. Always compare the measurements of the existing O-rings before ordering because Pentair offers multiple salt cell and union designs.

Key Features

Includes two replacement O-rings

Provides seals for both ends of one salt cell

Manufactured from durable Viton fluorocarbon material

Resistant to chlorine, salt, heat, ozone, and pool chemicals

Helps stop leaks around salt cell union connections

Replaces dried, cracked, compressed, or missing O-rings

Allows continued use of serviceable union nuts and tailpieces

Suitable for residential and commercial pool applications

Simple installation with no plumbing modifications required

O-rings only; unions and salt cell are not included

Benefits

Benefits of Viton Material

Viton is a fluorocarbon elastomer known for its resistance to chemicals and elevated temperatures. Compared with many standard rubber O-rings, Viton can provide improved durability when exposed to chlorinated water, saltwater, ozone, oils, and changing equipment temperatures.

The material helps maintain its sealing properties in demanding pool equipment environments, reducing the likelihood of premature swelling, deterioration, or hardening. The 568-229V set is marketed specifically as a chemically and thermally resistant replacement for compatible Pentair salt cell unions.

Specifications

The published industrial dimensions for part number 568-229V are approximately 2.375 inches inside diameter, 2.625 inches outside diameter, and 0.125 inch cross section.

Package Contents

• Two Viton salt cell union O-rings

Salt cell, union nuts, couplers, tailpieces, plumbing fittings, and lubricant are not included.

Warranty & Compatibility

Compatibility

Designed for compatible Pentair salt chlorine generator cell unions. It may fit traditional Pentair IntelliChlor salt cell union assemblies used with select IC20, IC40, and IC60 installations.

Common compatible applications may include:

• Pentair IntelliChlor salt cells
• Pentair 520595 replacement union sets
• Compatible 2-inch IntelliChlor plumbing unions
• Salt cell union assemblies using matching 568-229-size seals

Compatibility should be confirmed by comparing the existing O-ring dimensions. This set should not automatically be assumed compatible with Pentair IntelliChlor Plus, IntelliChlor LT, iChlor, or IC15 installations because union and seal designs may vary.

Installation Instructions

1. Turn off the pool pump and all power to the salt chlorine generator.
2. Relieve pressure from the pool circulation system.
3. Loosen the salt cell union nuts and remove the cell.
4. Remove the existing O-rings from both union connections.
5. Clean the O-ring grooves and sealing surfaces.
6. Inspect the union nuts, tailpieces, and cell housing for cracks.
7. Apply a light coating of pool-safe silicone lubricant to the new O-rings.
8. Position one O-ring evenly on each union connection.
9. Reinstall the salt cell and hand-tighten both union nuts.
10. Restart the circulation system and inspect for leaks.

Do not use petroleum jelly or petroleum-based lubricants because they may damage sealing components. Do not overtighten the union nuts.

Confirm Before Ordering

• Measure the existing O-ring before ordering.
• Confirm an inside diameter of approximately 2.375 inches.
• Confirm a cross section of approximately 0.125 inch.
• Verify that the leak is coming from the O-ring seal.
• Inspect the salt cell body and union nuts for cracks.
• Confirm that only O-rings are needed; union components are not included.
• Do not order based solely on the salt cell’s horsepower, plumbing size, or appearance.

Warranty Information

Warranty coverage is provided by the component manufacturer or supplier and is subject to its current replacement-part warranty terms. Damage caused by improper installation, incorrect sizing, chemical exposure outside the material’s specifications, or overtightened unions may not be covered.

Customer-Facing Q&A

Q: Does this set include the union nuts?
A: No. This package includes two replacement Viton O-rings only.

Q: Are two O-rings enough for one salt cell?
A: Yes. Most compatible salt cells require one O-ring at each union connection.

Q: Will these fit Pentair part number 520595 unions?
A: They are commonly listed for compatible Pentair salt cell unions, but the existing O-ring dimensions should be verified before ordering.

Q: Should the O-rings be lubricated?
A: A light coating of pool-safe silicone O-ring lubricant is recommended. Do not use petroleum-based products.

Q: Can new O-rings repair every union leak?
A: No. A leak may also be caused by a cracked union nut, damaged tailpiece, misaligned plumbing, overtightened connection, or cracked salt cell housing.