When pool equipment begins leaking at lids, housings, or pump connections, a worn or incorrect O-ring is often the root cause. The Aladdin O-330-0 Multi-Use O-Ring is a heavy-duty replacement seal engineered to restore reliable, watertight performance across a wide range of pool and spa equipment applications.

Designed as a direct replacement for multiple OEM part numbers—including Hayward® CX120D / C-120-D and Pentair® 39200300—this O-ring delivers OEM-equivalent fit, compression, and durability. It is commonly used in bromine dispenser housings, chemical feeder housings, pump plate-to-volute connections, top-load filter lids, and leaf canisters.

At Benchmark Pool Supply, we frequently see service calls caused by flattened or chemically degraded O-rings. The Aladdin O-330-0 is manufactured from pool-grade elastomer designed to resist chlorine, bromine, pressure cycling, and temperature changes, helping prevent leaks and extend the life of your equipment.

Wide Compatibility Across Pool Equipment

The Aladdin O-330-0 O-Ring is engineered as a versatile sealing solution used across multiple brands and equipment types. Its sizing and material composition make it suitable for both 1-1/2" and 2" applications where consistent compression is critical.

Common applications include:

• Bromine and chemical feeder housings

• Pump plate to volute sealing surfaces

• 25 & 35 sq. ft. top-load filter lids

• Leaf canisters (W530 / W560)

• Pool and spa equipment housings

Because these sealing points are exposed to constant chemical contact and mechanical stress, using the correct O-ring is essential to prevent leaks and air intrusion.

Why Replacing Multi-Use O-Rings Is Important

Multi-application O-rings often remain in service longer than recommended and can degrade without obvious visual damage. When they fail, common symptoms include:

• Water leaks around lids or housings

• Air entering the circulation system

• Loss of pump prime or pressure

• Reduced filtration efficiency

Replacing worn seals with the Aladdin O-330-0 O-Ring helps maintain system integrity and prevents minor leaks from turning into major repairs.

Built for Demanding Pool Environments

This O-ring is engineered specifically for swimming pool and spa systems. It maintains elasticity under continuous exposure to sanitizers and pressure, making it ideal for both residential and commercial pool applications.

It’s a dependable choice for:

• Preventive maintenance during routine service

• Repairing leaking feeders, pumps, or filter lids

• Pool professionals servicing multiple equipment brands

• DIY pool owners seeking OEM-quality reliability

Product Specifications

Buy with Confidence from Benchmark Pool Supply

When you purchase the Aladdin O-330-0 Multi-Use O-Ring from Benchmark Pool Supply, you’re buying from a pool equipment specialist who understands real-world compatibility—not just part numbers. We stock proven replacement parts that fit correctly and perform reliably.

If you need help confirming compatibility with your specific pump, feeder, or filter, our team is always ready to help.