Aladdin O-430 Hayward Filter Tank O-Ring | DEX360K

Key Benefits + Hayward Filter Fitment

• Aladdin O-430 replacement filter tank O-ring for specific Hayward stainless-steel filter applications.
• Cross-referenced to Hayward part number DEX360K.
• Verified by Aladdin as the tank O-ring used in its Hayward MicroClear stainless-steel DE filter service kit.
• Documented for older MicroClear / Vertical DE stainless-steel applications, including C3000S and C4000S references.
• Helps restore the tank seal when the original O-ring is worn, flattened, cracked, stretched, or missing.
• Confirm the filter model, tank construction, and original part number before ordering.

Quick Product Summary

The Aladdin O-430 is a replacement filter tank O-ring for select older Hayward stainless-steel pool filter applications. Aladdin identifies O-430 as the tank O-ring in its MicroClear stainless-steel DE filter kit and cross-references the application to Hayward DEX360K. Other documented fitment includes older MicroClear / Vertical DE stainless-steel C3000S and C4000S filter applications. This is a filter tank sealing O-ring, not a pool-cleaner gasket. Verify the filter model and original DEX360K part number before purchase because similar Hayward fiberglass and later filter designs may use a different tank O-ring.

Best For

• Replacing Hayward DEX360K filter tank O-rings
• Servicing older Hayward MicroClear stainless-steel DE filters
• Documented C3000S and C4000S stainless-steel tank applications

Why This Matters

• The tank O-ring seals the joint between the filter tank components where DEX360K is specified.
• A worn or damaged seal can allow water to leak from the tank joint.
• Matching the original Hayward part number helps reduce wrong-part orders.
• Correct tank-ring selection matters because similar Hayward filter families may use different O-rings.

Common Signs You Need This / Use This When

• The existing filter tank O-ring is cracked, flattened, stretched, hardened, or missing.
• Water is leaking from the tank joint after the sealing surfaces have been inspected.
• Your filter parts diagram identifies Hayward DEX360K.
• You are servicing an older MicroClear / Vertical DE stainless-steel filter that documents O-430 or DEX360K.
• The existing ring no longer seats evenly in the filter tank sealing area.

Product Specifications

Compatibility / Fitment Notes

Aladdin lists O-430 as the tank O-ring in its MicroClear stainless-steel DE filter service kit and identifies Hayward DEX360K as the corresponding OEM number. Independent filter-parts references also identify Aladdin O-430-0 for older Hayward MicroClear / Vertical DE stainless-steel tanks, including C3000S and C4000S applications. Do not select this O-ring by diameter or appearance alone; Hayward fiberglass tanks and other filter revisions can use different seals. Match DEX360K and the exact filter model before ordering.

Installation / Use Notes

Before opening a pool filter, shut the circulation system down and follow the filter manufacturer's pressure-relief and service instructions. Remove the old tank O-ring, clean and inspect the sealing groove and mating surfaces, and install the replacement without twisting or pinching it. Use only an O-ring lubricant approved for pool and spa equipment when appropriate. Reassemble and restart the filter only according to the manufacturer's instructions, and never open a filter while it is pressurized.

Buy with Confidence

Benchmark Pool Supply helps customers identify replacement filter parts by manufacturer, model, and OEM part number. For Aladdin O-430, compare your filter against Hayward DEX360K and the documented stainless-steel MicroClear application before ordering to help avoid choosing the similar but incorrect tank seal.