Filter Body & Tank O-Ring replaces Pentair 87300400Z, U9-389, U9-200, U9-399
Filter Body & Tank O-Ring replaces Pentair 87300400Z, U9-389, U9-200, U9-399

Filter Body & Tank O-Ring replaces Pentair 87300400Z, U9-389, U9-200, U9-399

$4.50
$4.50
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The Aladdin O-343-0 Filter Body & Tank O-Ring is a high-quality, professional-grade replacement seal designed for a wide range of pool and spa filtration systems. Precision-engineered to create a watertight, pressurized seal between the upper and lower halves of the filter tank, this O-ring is critical for preventing leaks and maintaining system pressure. It is the industry-standard "drop-in" replacement for Pentair, Sta-Rite, and American Products filters. Made from durable, chemical-resistant rubber, it ensures a reliable, leak-free repair for your large-capacity cartridge or D.E. filter housing.

Key Features

  • Universal Compatibility: Seamlessly replaces Pentair 87300400Z, Sta-Rite U9-389, U9-200, and U9-399.
  • Versatile Fit: Designed for elite models, including Pentair Clean & Clear Plus, System 3, and FNS Plus D.E. Filters.
  • High-Grade Elastomers: Built with durable Buna-N rubber to withstand high-pressure cycles and pool chemicals.
  • Critical Pressure Seal: Prevents water bypass and air leaks, ensuring your filtration system runs at peak efficiency.
  • Direct OEM Equivalent: Engineered to meet or exceed original manufacturer specifications for a perfect, airtight fit.
  • Weather Resistant: Designed to maintain flexibility and resist cracking even under extreme outdoor temperature fluctuations.