Hayward SX360Z1 Bulkhead O-Ring

What This Part Is Used For
The Hayward SX360Z1 is an O-ring used to seal the bulkhead fitting on compatible Hayward sand filters. It sits at the bulkhead connection point where internal plumbing passes through the filter tank wall. This seal helps keep the filter watertight during normal filtration and backwashing.

Why This Part Matters
A flattened or cracked bulkhead O-ring is a common cause of slow leaks at the side of the filter tank. Even a small drip can turn into steady water loss and pad damage over time. Replacing the correct O-ring restores a proper seal without overtightening the fitting. It also helps prevent air intrusion that can affect circulation stability.

Key Features and Specifications

• Manufacturer part number: SX360Z1
• Bulkhead O-ring for compatible Hayward sand filters
• Seals the bulkhead fitting at the filter tank wall
• Used to correct leaks at bulkhead connections
• Service replacement seal for sand filter maintenance

Installation and Fitment Guidance
Turn off the pump and relieve filter pressure before loosening any bulkhead fittings. Clean the sealing surfaces and seat the new O-ring evenly before reassembly. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures a full ecosystem of residential pool equipment including pumps, filters, heaters, automation, cleaners, chlorination systems, and service parts. Their sand filters integrate with Hayward valves and circulation equipment found on many pool pads. This compatibility makes routine service and part replacement straightforward. Hayward service parts are widely supported across the pool industry.

Common Service Context
Techs typically replace bulkhead O-rings when they see a drip trail down the side of the filter tank near the plumbing pass-through. It is also common during sand changes and multiport valve service when fittings are opened and resealed.