Hayward CX120D Tank O-Ring

What This Part Is Used For
The Hayward CX120D Tank O-Ring seals the connection between the filter tank body and head. It prevents water leaks during normal filtration cycles.

Why This Part Matters
A flattened or cracked O-ring can cause water to spray from the tank seam. Replacing it restores a tight seal and proper system pressure. This small component helps prevent pad flooding and air intrusion.

Key Features and Specifications

• Manufacturer part number CX120D
• Tank O-ring for compatible Hayward filters
• Seals tank body to filter head
• Replacement sealing component
• Supports leak prevention

Installation and Fitment Guidance
Turn off the pump and relieve pressure before separating the tank. Lightly lubricate with a pool-safe lubricant before reinstalling. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward produces cartridge filters and service components used in residential pool systems. Their O-rings are widely supported for routine maintenance. Genuine Hayward seals help maintain proper tank integrity.

Common Service Context
Frequently replaced during seasonal startups or when leaks appear at the tank seam. Also common during cartridge replacements.