Aladdin O-83 Multi-Use Union, Bulkhead & Diffuser O-Ring
The Aladdin O-83 is a versatile replacement O-ring designed for compatible pool and spa pump unions, filter bulkheads, valve adapters, and diffuser connections. It provides a sealing surface between mating components to help prevent water leaks and air intrusion.
This O-ring replaces several manufacturer-specific seals, including Hayward SPX4000Z1, Pentair 274494, Sta-Rite U9-156 and U9-374, Jandy R0339600, and Waterway 805-0332B. It is commonly used in compatible Hayward, Pentair, Sta-Rite, Jandy, and Waterway pool equipment.
Product Features
- Genuine Aladdin replacement O-ring
- Manufacturer part number: O-83
- Multi-use design for compatible unions, bulkheads, valve adapters, and diffusers
- Used in select pool pump, filter, and multiport valve assemblies
- Replaces multiple OEM O-ring part numbers
- Helps prevent leaks at properly assembled equipment connections
- Suitable for replacing flattened, cracked, stretched, or deteriorated seals
- Sold individually as one O-ring
Product Details
| Brand | Aladdin |
| Part Number | O-83 |
| Product Type | Multi-Use Replacement O-Ring |
| Inside Diameter | 2-3/8" |
| Outside Diameter | 2-3/4" |
| Cross Section | 3/16" |
| Applications | Pool Pumps, Filters, Unions, Bulkheads, and Valve Adapters |
| Quantity | 1 O-Ring |
Compatibility
- Hayward NorthStar, EcoStar, and select TriStar pump assemblies
- Hayward pump applications requiring SPX4000Z1
- Pentair FullFloXF and select Multiport Valve assemblies
- Pentair / Pac-Fab bulkhead and valve adapter connections using 274494
- Sta-Rite Dura-Glas II, Dyna-Jet, Dyna-Max, Dyna-Wave, and Maxi-Glas pump applications
- Sta-Rite System 2 and System 3 filter applications using the matching seal
- Jandy MHP and MHPU pump coupling connections using R0339600
- Compatible Waterway pump unions using 805-0332B
- Additional pool equipment calling for one of the listed OEM cross-reference numbers
OEM Cross-Reference Part Numbers
- Hayward SPX4000Z1
- Pentair 274494
- Pentair 35505-1424
- Sta-Rite U9-156
- Sta-Rite U9-185
- Sta-Rite U9-374
- Jandy R0339600
- Jandy R039500
- Waterway 805-0332B
- Jacuzzi 13-1023-06-R
- Jacuzzi 85-8263-00-R
- Harmsco 930
- Advance OV-11-332
Verify the original equipment model and OEM O-ring part number before ordering. The O-83 is used in multiple applications, but it is not interchangeable with every 2-inch plumbing union or bulkhead seal.
Common Uses
- Replacing leaking pool pump union O-rings
- Repairing compatible filter bulkhead seals
- Replacing worn multiport valve adapter seals
- Servicing pool pump diffuser connections
- Replacing damaged or flattened coupling O-rings
- Routine pool and spa equipment maintenance
Installation Notes
- Turn off the pool pump and disconnect electrical power before servicing equipment.
- Relieve all system pressure before opening unions, filters, or valves.
- Remove the old O-ring and clean the sealing groove thoroughly.
- Inspect the mating surfaces for cracks, scratches, or debris.
- Install the replacement O-ring without twisting, pinching, or overstretching it.
- Apply only a lubricant approved for the specific equipment and seal material, where recommended.
- Reassemble the equipment according to the manufacturer's instructions.
- Restart the system and check for leaks from a safe distance.
Related Products
- Hayward SPX4000Z1 Pump Diffuser O-Ring
- Aladdin Magic Lube PTFE Lubricant, 1 oz | 630
- Aladdin Magic Lube PTFE Lubricant, 5 oz | 631
- Aladdin Magic Lube II Silicone Lubricant, 1 oz | 650
Maintenance Tips
- Inspect O-rings whenever unions or equipment connections are opened.
- Replace seals showing cracking, flattening, swelling, or brittleness.
- Keep sealing surfaces clean and free of sand and debris.
- Avoid overtightening plastic unions and fittings.
- Replace damaged sealing components promptly to maintain proper equipment operation.
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.



