Aladdin O-43 Multi-Use 2" Pool Union & Heater Flange O-Ring
The Aladdin O-43 Multi-Use Replacement O-Ring is a versatile sealing component designed for compatible swimming pool and spa pumps, filters, heaters, valves, and plumbing unions. Manufactured by Aladdin Equipment Company, this aftermarket O-ring provides a replacement for worn, cracked, flattened, or deteriorated original equipment seals.
Measuring 2-1/2 inches inside diameter, 2-3/4 inches outside diameter, and 1/8 inch thick, the Aladdin O-43 is commonly identified as a 2-inch union O-ring because of its applications in nominal 2-inch pool plumbing connections.
The O-43 is compatible with a variety of equipment, including select Hayward H-Series heater flange connections, Hayward Super Star Clear cartridge filters, Hayward S200/S240 sand filter unions, Aqua-Flo pumps, and other pool equipment requiring the same sealing dimensions.
Product Features
- Multi-Use Replacement O-Ring: Designed for compatible pool pumps, filters, heaters, valves, and plumbing connections.
- 2-1/2" Inside Diameter: Precision-sized replacement sealing component.
- 1/8" Cross-Section: Provides the correct sealing profile for specified equipment applications.
- Aftermarket Replacement: Manufactured by Aladdin Equipment Company as an alternative to compatible OEM seals.
- Hayward Heater Compatibility: Cross-referenced to HAXFOR1930 flange O-rings for compatible H-Series heater connections.
- Filter Union Applications: Used in select Hayward Super Star Clear, S200, and S240 filter assemblies.
- Versatile Equipment Compatibility: Cross-referenced to multiple original manufacturer part numbers.
- Individual Replacement: Sold as one O-ring for convenient equipment maintenance and repairs.
Product Specifications
- Manufacturer: Aladdin Equipment Company
- Manufacturer Part Number: O-43
- Product Type: Multi-Use Replacement O-Ring
- Nominal Application Size: 2" Pool Plumbing Union
- Inside Diameter: 2-1/2"
- Outside Diameter: 2-3/4"
- Cross-Section Thickness: 1/8"
- Color: Black
- Application: Pool and Spa Equipment Sealing
- UPC: 601402110160
- Package Quantity: 1 O-Ring
Compatible Pool and Spa Equipment
The Aladdin O-43 is cross-referenced for use with compatible equipment from several manufacturers.
Hayward Pool Equipment
- Hayward H-Series Heater Flange Connections – HAXFOR1930
- Hayward Super Star Clear Cartridge Filters
- Hayward S200 Sand Filter Union Connections
- Hayward S240 Sand Filter Union Connections
- Hayward SX200Z3 Bulkhead Fittings
- Hayward GLX-UNION Salt Chlorinator Union Connections
- Compatible Hayward Micro Clear Filter Unions
Additional Equipment Applications
- Aqua-Flo Dominator – 92200210 Casing Fitting O-Ring
- Astral – 722R0620040 Inlet/Outlet Fitting O-Ring
- Jacuzzi – 47-0230-07-R Union O-Ring
- Purex / Ortega – P-62230 / 07-2560 Valve Cap O-Ring
- Swimquip – 35505-1244 Union Collar O-Ring
- Waterway – 805-0230 Crystal Water Filter Air Bleeder Elbow O-Ring
- Other Compatible Equipment Requiring an O-Ring with the Same Dimensions
Compatibility Notice: Aladdin O-43 is used in multiple equipment applications. Verify the original manufacturer part number, O-ring groove dimensions, and equipment model before ordering. Not every 2-inch plumbing connection uses this O-ring.
OEM Replacement Cross-References
- Hayward: HAXFOR1930
- Hayward: SX200Z3
- Hayward: GLX-UNION
- Aqua-Flo: 92200210
- Astral: 722R0620040
- Jacuzzi: 47-0230-07-R
- Purex: P-62230 / 07-2560
- Swimquip: 35505-1244
- Waterway: 805-0230
Cross-reference numbers are provided for equipment identification. Confirm the specific application before replacing the original seal.
Hayward H-Series Heater Flange O-Ring Replacement
The Aladdin O-43 is commonly used as an aftermarket replacement for the Hayward HAXFOR1930 heater flange O-ring, which seals compatible H-Series heater inlet and outlet plumbing connections.
These seals work with the heater's flange pipe nipples and union nuts to help prevent water leakage around the heater plumbing connections.
Important: The original Hayward HAXFOR1930 is packaged as a set of two O-rings. Aladdin O-43 is sold individually. Customers replacing both heater flange seals should order two Aladdin O-43 O-rings.
When to Replace Your Pool Equipment O-Ring
Pool equipment O-rings can deteriorate over time due to heat, compression, chemical exposure, and normal equipment servicing.
- Visible cracks or surface damage
- Flattened or permanently compressed O-ring
- Water leaking around union connections
- O-ring has stretched and no longer fits properly
- Hardening or loss of flexibility
- Seal damage discovered during equipment maintenance
- Existing O-ring is twisted, pinched, or missing
Installation Instructions
- Turn off the connected pool equipment and disconnect electrical power where applicable.
- Allow heaters and other hot equipment to cool completely.
- Close applicable isolation valves and relieve all internal water pressure.
- Disassemble the appropriate union or sealing connection according to the equipment manufacturer's instructions.
- Remove the existing O-ring and inspect the sealing surfaces for damage.
- Clean the O-ring groove and mating surfaces.
- Verify that the Aladdin O-43 matches the original seal dimensions.
- Apply a thin coating of compatible silicone-based O-ring lubricant when recommended by the equipment manufacturer.
- Install the replacement O-ring without twisting, stretching excessively, or pinching it.
- Reassemble the connection according to the manufacturer's instructions.
- Restore circulation and inspect the connection for leaks.
Recommended O-Ring Lubricants
Proper O-ring lubrication can help prevent twisting and pinching during installation. Aqua Pool Supply carries Aladdin lubricants designed for pool and spa equipment maintenance.
- Aladdin Magic Lube II Silicone Lubricant – 1 oz | 650 – Silicone-based lubricant designed for compatible pool and spa O-rings, gaskets, and sealing components.
- Aladdin Magic Lube II Silicone Lubricant – 5 oz | 651 – Larger tube of silicone lubricant suitable for professional pool equipment servicing.
- Aladdin Magic Lube PTFE Lubricant – 5 oz | 631 – Multipurpose PTFE-based lubricant for manufacturer-approved pool equipment applications.
Related Hayward Heater Replacement Parts
Looking for additional components for compatible Hayward H-Series heater plumbing repairs?
- Hayward HAXNNO1930 – H-Series Heater Plumbing Kit – Replacement plumbing connection kit for compatible Hayward H-Series heaters.
- Hayward HAXNIP1930 – Heater Flange Pipe Nipples – Replacement pipe nipples for compatible Hayward heater inlet and outlet connections.
Package Contents
Includes: One (1) Aladdin O-43 Multi-Use Replacement Pool and Spa Equipment O-Ring.
Important: This product includes one O-ring only. Union fittings, heater flange pipe nipples, union nuts, filters, pumps, and other plumbing components are sold separately.
Compatibility: Designed for specified equipment requiring an O-ring measuring 2-1/2" inside diameter, 2-3/4" outside diameter, and 1/8" cross-section.
Installation Safety: Never open pressurized pool equipment or service a hot heater. Disconnect power, relieve water pressure, and follow the equipment manufacturer's service instructions.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.



