Hayward VLX4004A O-Ring Kit

What This Part Is Used For
The Hayward VLX4004A is an O-ring kit for compatible Hayward VL Series sand filter systems. These seals are used at key joints on the filter and valve connections to keep the system watertight. The kit is used on the equipment pad during filter service.

Why This Part Matters
Flattened or cracked O-rings are a common cause of filter leaks and air intrusion. Leaks at the filter can waste water, create pad damage, and cause priming problems depending on where the seal sits. Replacing O-rings during service helps restore reliable sealing and reduces repeat visits. Correct seals also help prevent overtightening that can crack housings and clamps.

Key Features and Specifications

• Manufacturer part number: VLX4004A
• O-ring kit for compatible Hayward VL Series filters
• Used to restore watertight sealing during filter service
• Helps prevent leaks and air intrusion at filter joints
• For equipment pad filtration maintenance

Installation and Fitment Guidance
Depressurize the filter before opening any clamps or removing the valve. Clean sealing grooves before installing new O-rings and confirm proper seating during reassembly. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures complete residential pool systems including pumps, filters, heaters, automation controls, cleaners, and chlorination equipment. Their filtration components integrate with Hayward pumps and valves to keep circulation and water clarity consistent. This ecosystem approach makes maintenance predictable across common pad layouts. Hayward replacement seals and parts are widely supported in the field.

Common Service Context
Techs typically replace O-rings when they see drips around the valve flange, clamp band, or filter body seam after service. It is also common during spring openings after seals dry out or flatten over the off season.