Swimables SW‑41‑120 manifold O‑ring kit for Pentair MasterTemp and Sta‑Rite Max‑E‑Therm heaters. Includes rectangular manifold seal + 12 coil tube sheet O‑rings—designed for leak prevention, heater efficiency, and straightforward maintenance.

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Key Features:

• Exact OEM match: Direct replacement for Pentair/Sta‑Rite part #77707‑0120, specifically for MasterTemp and Max‑E‑Therm heaters 

• Comprehensive kit: Contains one rectangular manifold O‑ring and twelve tube‑sheet coil O‑rings to fully seal the manifold assembly 

• Premium materials: Made from high-grade, durable elastomer designed to resist temperature and chemical exposure in pool environments

• Leak prevention: Ensures tight seals between manifold and heat exchanger, preventing water leaks that reduce heater efficiency 

• Easy maintenance: Ideal for regular heater maintenance or during manifold disassembly—helps restore operational integrity 

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Product Overview:
The Swimables SW‑41‑120 Manifold O‑Ring Kit is engineered as a full-seal replacement for Pentair MasterTemp and Sta‑Rite Max‑E‑Therm pool heaters. It replaces the OEM part #77707‑0120 and includes a primary rectangular manifold O‑ring plus twelve smaller tube-sheet coil O‑rings—each critical for sealing the manifold-to-coil junction in the heater assembly.

Crafted from high-quality elastomeric material, these O‑rings are resistant to the temperature fluctuations, pool chemicals, and pressures found in typical pool heater operations. Proper sealing prevents water leakage, ensures optimal heat transfer efficiency, and reduces the risk of premature heat exchanger corrosion or failure.

Ideal for both routine maintenance and repair, this kit simplifies manifold servicing by providing all necessary seals in one package—saving time and eliminating guesswork. Whether replacing worn seals or reassembling the manifold after a leak investigation, the SW‑41‑120 helps restore system reliability and performance.