Key Fit Multi-Use Pool Equipment O-Ring – Provides a reliable seal to prevent water and air leaks Common Applications – Used in chemical feeders, bromine dispensers, pump housings, filter lids, and leaf canisters OEM Cross-Reference Replacement – Replaces Hayward CX120D / C-120-D, Pentair 39200300, and additional manufacturer part numbers Broad Equipment Compatibility – Compatible with select Hayward®, Pentair®, Jandy®, and Jacuzzi® pool equipment that reference the matching O-ring size Chemical-Resistant Material – Designed to withstand pool chemicals and regular service conditions Service-Friendly Design – Simple drop-in replacement; lubrication with pool-safe silicone recommended for best seal Product Reference – Aladdin O-330-0 Pool Equipment O-Ring 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 Specification Details Manufacturer Aladdin Aladdin Part Number O-330-0 Product Type Multi-use pool equipment O-ring OEM Cross References Hayward® CX120D, C-120-D · Pentair® 39200300 Additional OEM References 58309-000-020, W-542, AXW542, 47-0360-09-R, R0558800, R0449100, 53-200, R172223, R172240, 1135, 17B1087, 805-0360 Compatible Brands CMP®, Hayward®, Jacuzzi®, Jandy®, Lomart-Prest, Pentair®, Waterco, Waterway™ Plastics Compatible Models American Products™ Eagle™ & Olympian, Rainbow™ Dynamic I–III, HC3315/3330/3340, SwimQuip™ XL-VII Size / Dimensions 1-1/2" & 2" Applications Feeder housings, pump plate-to-volute, filter lids, leaf canisters Material Pool-grade elastomer Other Versions O-330V-0 Condition New replacement part 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.
