Waterway Union O-Ring for 1-1/2" Tailpiece / Union Connections | 805-0226
Waterway
SKU: WWP8050226
Waterway 805-0226 Union O-Ring for 1-1/2" Tailpiece / Union Connections
The Waterway 805-0226 is a replacement O-ring used to seal many Waterway 1-1/2" union and tailpiece connections found on pool and spa plumbing. Replacing a worn union O-ring helps stop drips at the union, prevents suction-side air leaks, and restores a reliable seal after routine service.
Key Details
- Manufacturer: Waterway
- Part Number: 805-0226
- Part Type: Union / tailpiece O-ring
- Common Application: 1-1/2" Waterway-style union sealing ring (union/tailpiece groove seal)
O-Ring Size (Commonly Listed)
- Inside Diameter (ID): 2"
- Outside Diameter (OD): 2-1/4"
- Cross Section (Thickness): 1/8"
Where It’s Commonly Used
- 1-1/2" union connections on select Waterway pumps and plumbing unions
- 1-1/2" tailpiece/union groove seals on certain Waterway equipment connections (model-dependent)
- Some Waterway union/diffuser sealing locations that use the same size O-ring (verify by measurement and groove style)
What This O-Ring Does
- Seals the union faces to prevent water leaks under pressure.
- Helps prevent suction-side air intrusion that can cause bubbles in the pump basket, noise, or priming issues.
- Maintains a service-friendly connection so equipment can be removed without cutting plumbing.
When to Replace
- Dripping or weeping at the union connection
- Flattened, cracked, swollen, or nicked rubber
- Union must be overtightened to stop a leak
- Union was opened for service and the old seal no longer reseals reliably
Installation Notes
- Turn the pump off and relieve system pressure before opening the union.
- Remove the old O-ring and clean both sealing faces and the O-ring groove (remove grit, scale, and old residue).
- Seat the new O-ring evenly in the groove—do not twist or stretch it excessively.
- Lightly lubricate with pool-safe silicone lubricant (avoid petroleum-based products).
- Hand-tighten the union nut snugly; overtightening can distort the seal and cause leaks.
- Restart the system and recheck for seepage once full flow/pressure is restored.
Maintenance Tip
Many union leaks are caused by debris or minor damage on the union faces rather than the O-ring itself. If a new O-ring still seeps, inspect the union nut and tailpiece for hairline cracks and confirm the mating faces are smooth and aligned without pipe stress.
Related Products (Aqua Pool Supply)
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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