{"product_id":"pentair-manifold-o-ring-kit-for-max-e-therm-and-mastertemp-heater-water-system-77707-0120","title":"Pentair Manifold O-Ring Kit for Max-E-Therm and MasterTemp Heater Water System 77707-0120","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair 77707-0120 O-Ring Kit for MasterTemp and Max-E-Therm Heaters\u003c\/h2\u003e\n\n  \u003cp\u003eThe Pentair 77707-0120 O-Ring Kit is a genuine replacement sealing kit used on compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. This kit is used in the heater water system to help reseal the manifold\/header and tube sheet area during service or repair.\u003c\/p\u003e\n\n  \u003cp\u003eReplace worn, flattened, cracked, or leaking O-rings to help restore a proper watertight seal and prevent water leaks around the heater manifold assembly. This kit is commonly used when servicing the heat exchanger, manifold, or tube sheet area of compatible MasterTemp and Max-E-Therm heater models.\u003c\/p\u003e\n\n  \u003ch3\u003eProduct Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eGenuine Pentair replacement part\u003c\/li\u003e\n    \u003cli\u003eManufacturer part number: 77707-0120\u003c\/li\u003e\n    \u003cli\u003eReplacement O-ring kit for compatible heater water system repairs\u003c\/li\u003e\n    \u003cli\u003eUsed with Pentair MasterTemp and Sta-Rite Max-E-Therm heaters\u003c\/li\u003e\n    \u003cli\u003eHelps seal the manifold\/header and tube sheet area\u003c\/li\u003e\n    \u003cli\u003eIdeal for leak repair or heater manifold service\u003c\/li\u003e\n    \u003cli\u003eDesigned for proper fit and sealing in compatible Pentair heater assemblies\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProduct Details\u003c\/h3\u003e\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003ePentair\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003e77707-0120\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eHeater O-Ring Kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003ePool and spa heater water system sealing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eCommon Use\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eManifold\/header and tube sheet sealing repair\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePentair MasterTemp pool and spa heaters\u003c\/li\u003e\n    \u003cli\u003eSta-Rite Max-E-Therm pool and spa heaters\u003c\/li\u003e\n    \u003cli\u003eSelect ASME heater water system applications\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power and gas to the heater before servicing.\u003c\/li\u003e\n    \u003cli\u003eAllow the heater to cool completely before disassembly.\u003c\/li\u003e\n    \u003cli\u003eRelieve system pressure and drain water from the heater before removing manifold components.\u003c\/li\u003e\n    \u003cli\u003eClean sealing surfaces before installing new O-rings.\u003c\/li\u003e\n    \u003cli\u003eUse only pool-safe silicone lubricant on O-rings when needed.\u003c\/li\u003e\n    \u003cli\u003eDo not overtighten manifold hardware, as uneven pressure can cause leaks or damage.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, restore water flow and check carefully for leaks before returning the heater to normal operation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentairmastertempheatermanifoldbypassvalvekit777070001pen777070001\"\u003ePentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/pentairmastertempstaritemaxethermthermalregulatorkit777070010pen777070010\"\u003ePentair MasterTemp \u0026amp; Sta-Rite Max-E-Therm Thermal Regulator Kit | 77707-0010\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect the heater manifold area periodically for small leaks, mineral buildup, or corrosion.\u003c\/li\u003e\n    \u003cli\u003eRepair leaks promptly to help prevent additional heater damage.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper pool water chemistry to reduce scale buildup and extend heater component life.\u003c\/li\u003e\n    \u003cli\u003eWhen replacing heater seals, inspect nearby components such as the bypass valve, thermal regulator, drain plug, and pressure relief valve for wear.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52748583174460,"sku":"77707-0120","price":44.94,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aquapoolsupply.com\/products\/pentair-manifold-o-ring-kit-for-max-e-therm-and-mastertemp-heater-water-system-77707-0120","provider":"Aqua Pool Supply","version":"1.0","type":"link"}