Description
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.
