Hayward DEX2422Z2 SwimClear Filter Series Metal Reinforced Lid O-Ring

Genuine Hayward DEX2422Z2 Metal Reinforced Filter Lid O-Ring. This is the OEM lid O-ring for Hayward SwimClear cartridge filters and ProGrid DE filters. Unlike a standard rubber O-ring, the DEX2422Z2 features a metal inner core surrounded by rubber, providing greater rigidity, higher pressure resistance, and resistance to stretching and distortion — ensuring a reliable, watertight seal between the filter lid and tank.

A worn or damaged lid O-ring is a common cause of water leaking from the top of the filter. Replacing with the genuine Hayward DEX2422Z2 restores a proper seal and maintains filter operating pressure.

Compatible Models

Hayward SwimClear Cartridge Filters

• C2020, C2025, C2030
• C3020, C3025, C3030
• C4020, C4025, C4030
• C5020, C5025, C5030
• C7000, C7030

Hayward ProGrid DE Filters

• DE2420, DE3620, DE4820, DE6020, DE7220

Hayward HCF Series Filters

• Contact us to confirm your specific HCF model

Product Details

• Genuine Hayward spare part — not aftermarket
• Part number: DEX2422Z2
• Construction: metal inner core with rubber outer — metal reinforced
• Higher pressure resistance than standard O-rings
• Resists stretching, distortion, and high temperatures
• Maintains alignment between filter lid and tank body
• SKU: 20-DEX2422Z2

Frequently Asked Questions

What makes the DEX2422Z2 different from a standard O-ring?

The DEX2422Z2 is a metal-reinforced O-ring — it has a rigid metal inner core encased in rubber. This construction prevents the O-ring from stretching or distorting under pressure, maintains its shape over time, and provides a more consistent seal than a standard all-rubber O-ring. It also withstands higher operating temperatures and pressures.

How do I know if my filter lid O-ring needs replacing?

Common signs include water leaking from the top of the filter (around the lid joint), visible cracking, flattening, or distortion of the O-ring, difficulty seating the lid properly, or a drop in filter operating pressure. Inspect the O-ring each time you open the filter for cartridge cleaning.

Does this fit both SwimClear and ProGrid filters?

Yes — the DEX2422Z2 is the correct lid O-ring for Hayward SwimClear cartridge filters (C2020 through C7030) and Hayward ProGrid DE filters (DE2420 through DE7220). It also fits certain HCF series models — contact us with your model number to confirm.

Do I need to lubricate the O-ring on installation?

Yes — apply a thin coat of Hayward-approved O-ring lubricant (or a silicone-based pool equipment lubricant) to the O-ring before seating it in the groove. This helps the O-ring seat evenly, prevents pinching, and extends its service life. Do not use petroleum-based lubricants as these will degrade the rubber.

Is this a genuine Hayward part?

Yes — this is a 100% genuine OEM Hayward replacement O-ring (DEX2422Z2), not a generic alternative. Genuine parts ensure correct dimensions, material specification, and pressure rating for your Hayward filter.