Hayward Gauge Adapter | ECX12866
Hayward Products
SKU: ECX12866
Hayward ECX12866 Replacement Tank O-Ring for Perflex® DE Filters
Part # ECX12866 — a genuine Hayward replacement tank O-ring designed for Perflex® Extended-Cycle DE filter systems. This O-ring provides the primary seal between the upper and lower filter tank halves, ensuring a watertight and pressure-tight connection during operation.
Key Features
- OEM Hayward tank O-ring engineered specifically for Perflex DE filter systems.
- Forms a secure, leak-free seal between the filter tank halves.
- Durable elastomer construction resists pool chemicals, pressure cycling, and outdoor exposure.
- Ensures proper system pressure and prevents air intrusion that can reduce filtration efficiency.
- Direct replacement part requiring no modification for installation.
Compatible Models
The ECX12866 O-ring is commonly used on Hayward Perflex DE filter models including:
- EC40 Series
- EC50 Series
- EC65 / EC65A Series
Typical Applications
This tank O-ring should be replaced when the filter begins showing signs of leakage at the tank band clamp, difficulty holding pressure, or air bubbles returning to the pool. Replacing a worn or flattened O-ring restores proper sealing and helps maintain the filter’s designed performance.
Installation & Compatibility Notes
Turn off the pump and relieve all system pressure before servicing. Remove the tank clamp, separate the tank halves, and carefully extract the old O-ring. Clean the groove and sealing surfaces thoroughly. Apply a thin layer of pool-safe silicone lubricant to the new ECX12866 O-ring, seat it evenly in the groove, and reassemble the tank. Tighten the tank clamp per manufacturer guidelines and verify there are no leaks upon startup.
Why Choose This O-Ring?
This genuine Hayward ECX12866 gasket maintains the original performance and reliability of your Perflex DE filter. Using OEM seals helps prevent unexpected leaks, reduces maintenance issues, and ensures the system operates at proper pressure for optimal filtration.
Maintenance Tips
- Inspect the tank O-ring at the start and end of each season for flattening, cracks, or chemical wear.
- Always lubricate the O-ring with silicone-based lubricant to extend its lifespan and prevent pinching.
- Check the tank clamp tension periodically to ensure an even, secure seal.
- Replace the O-ring any time the tank is disassembled for cleaning or major service.
Questions about returns? View our return policy.
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.
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