Hayward SX360Z1 – Bulkhead O-Ring

Product Overview

The Hayward SX360Z1 is a genuine replacement O-ring designed to seal the filter tank bulkhead on select Hayward sand, cartridge and D.E. pool filters, helping maintain a leak-free system and consistent water flow.

Key Features

• OEM O-ring for filter bulkhead applications in Hayward filtration systems.
• Designed to fit multiple filter families—sand, cartridge and D.E.—ensuring broad compatibility.
• Precision molded for proper seal thickness and fit to prevent pressure loss or leakage.
• High-quality elastomer construction, resistant to pool chemicals and temperature changes.

Technical Specifications

• Part Number: SX360Z1
• Approximate Dimensions: Outside Diameter ~3-1/8″, Inside Diameter ~2-3/4″, Thickness ~3/16″
• Application: Bulkhead seal for compatible Hayward filters
• Material: Chemical-resistant rubber/elastomer

Compatibility & Fitment

This O-ring fits Hayward filter models including Pro Series and Pro Series Plus sand filters (e.g., S210S, S244S, S310S, S311/S360), cartridge filters (Super StarClear C2000/3000/4000/5000), and MicroClear vertical grid D.E. filters made after 1995. Always verify your existing O-ring size and filter model before ordering.

Installation Instructions

• Turn off the pump and relieve all pressure in the filter system before servicing.
• Remove the filter tank lid or multiport valve and locate the bulkhead opening.
• Remove the old O-ring, clean the sealing surface thoroughly, and inspect for damage or wear.
• Install the new SX360Z1 O-ring in the groove or seating area, ensuring it sits flat and evenly.
• Reassemble the filter tank, restore circulation, and check for proper pressure and absence of leaks.

Troubleshooting & Maintenance

• Leak around the tank bulkhead: Ensure the O-ring is correctly seated and that the sealing surfaces are clean and undamaged.
• Pressure drop or flow issues: A worn or compressed O-ring can cause bypass or improper sealing—replace if flattening or hardening is visible.
• O-ring damage or brittleness: Inspect annually and replace when signs of aging appear—chemical exposure accelerates wear.

Maintenance Tip

Include this O-ring in your annual filter service routine. When you open the filter tank for media replacement or annual cleaning, check the seal condition and replace with the SX360Z1 if there is any visible wear. A properly sealed bulkhead helps maintain optimal filtration efficiency and prolongs equipment life.