Jandy Pro Series Tank O-Ring | R0357800

Jandy SKU: R0357800
Jandy Pro Series Tank O - Ring | R0357800 - Pool Filter Parts - img - 1
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 1
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 2
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 3
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 4
Jandy Pro Series Tank O - Ring | R0357800 - Pool Filter Parts - img - 1
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 1
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 2
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 3
Jandy CV, CL, DEV Filter Tank O - Ring R0357800 - Pool Filter Parts - img - 4
Jandy CL Cartridge Filter Not sure it fits? See this part on the interactive diagrams Jandy CL Cartridge FilterJandy CV Cartridge FilterJandy DEV48 D.E. FilterJandy DEV60 D.E. Filter

Jandy Pro Series Tank O-Ring | R0357800

Jandy SKU: R0357800
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$48.94
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Questions about returns? View our return policy.
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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: 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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