Jandy Pro Series Tank O-Ring | R0357800
Jandy
SKU: R0357800
Jandy R0357800 – Filter Tank O-Ring
Product Overview
The Jandy R0357800 is a genuine replacement O-ring designed for filter tank assemblies in the CV, CL, DEV and DEL series. It ensures a reliable, watertight seal between the tank body and lid, helping maintain system pressure and prevent leaks.
Key Features
- Fits Jandy CV and CL series cartridge filters (models such as CV340, CV460, CV580; CL340, CL460, CL580).
- Compatible also with Jandy DEV and DEL series D.E. filters (DEV48, DEV60; DEL48, DEL60).
- High-quality elastomer material crafted for pool and spa chemical exposure.
- Critical part for maintaining system integrity—helps avoid air ingression, leaks and pressure loss.
Technical Specifications
- Part Number: R0357800
- Type: Tank body / lid O-ring
- Material: Chemical-resistant elastomer
Compatibility & Installation Notes
This O-ring is intended for use in Jandy CV/CL cartridge filter tanks and DEV/DEL series D.E. filters. Before installing, verify the filter model number and ensure the tank body and lid seating surfaces are clean and undamaged. A proper seal ensures optimal filtration performance.
Installation Instructions
- Turn off the pump and relieve pressure in the filter system.
- Remove the filter lid and lift out the old O-ring.
- Clean the sealing surfaces thoroughly—remove dirt, debris or residue.
- Place the new R0357800 O-ring in the groove, ensuring it sits evenly.
- Reinstall the lid, restore circulation and monitor for proper sealing and pressure stability.
Troubleshooting & Maintenance
- Leak or drip at lid seam: Check whether the O-ring is seated correctly, inspect for damage or misalignment in the lid or tank flange.
- Air bubbles in system or loss of prime: A compromised lid seal could allow air ingress—replace the O-ring if worn or hardened.
- Hard or brittle O-ring: If the old O-ring is flattened, cracked or chemical‐damaged, replacement is recommended immediately.
Maintenance Tip
Inspect the O-ring each service interval—especially when performing filter maintenance or cartridge replacement. Keeping the seal in good condition helps extend filter service life, maintain proper flow, and avoid unexpected downtime.
Questions about returns? View our return policy.
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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