{"product_id":"pentair-triton-c-c-3-8-1-2-filter-closure-square-ring-152509z","title":"Pentair Triton C \/ C-3 8-1\/2\" Filter Closure Square Ring | 152509Z","description":"\u003ch2 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eProduct Overview\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003ePentair 152509Z Closure Square Ring\u003c\/strong\u003e is a genuine OEM sealing ring designed for compatible \u003cstrong\u003ePentair Triton® C and Triton C-3 fiberglass sand filters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eInstalled beneath the filter’s \u003cstrong\u003e8-1\/2\" closure\u003c\/strong\u003e, this square-profile sealing ring helps create a watertight seal between the closure assembly and the filter tank. It is an important service component whenever the filter is opened for maintenance or when an existing closure seal has become flattened, cracked, brittle, or damaged.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003ePentair currently lists \u003cstrong\u003e152509Z\u003c\/strong\u003e as the \u003cstrong\u003eSquare Ring – Closure\u003c\/strong\u003e for Triton C\/C-3 commercial fiberglass sand filters. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine \u003cstrong\u003ePentair OEM replacement part\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: \u003cstrong\u003e152509Z\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eClosure square ring \/ gasket\u003c\/li\u003e\n\u003cli\u003eDesigned for Pentair \u003cstrong\u003eTriton C and Triton C-3 filters\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUsed with the \u003cstrong\u003e8-1\/2\" filter closure\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSquare-profile sealing design\u003c\/li\u003e\n\u003cli\u003eHelps prevent water leakage around the filter closure\u003c\/li\u003e\n\u003cli\u003eIdeal for routine filter service and rebuilds\u003c\/li\u003e\n\u003cli\u003eDirect replacement for worn or damaged original seal\u003c\/li\u003e\n\u003cli\u003eSold individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"auto\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eTriton® C \/ C-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e152509Z\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eClosure Square Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure Size\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e8-1\/2\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCommercial Sand Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal Style\u003c\/td\u003e\n\u003ctd\u003eSquare Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC \/ Barcode\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e788379885694\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. Shipping Weight\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0.5 lb\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e8\" × 12\" × 0.4\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003ePentair lists the 152509Z square ring in the replacement-parts breakdown for \u003cstrong\u003eTriton C and C-3 sand filters\u003c\/strong\u003e, including commercial fiberglass filter configurations. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIt is associated with compatible:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePentair Triton C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePentair Triton C-3\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTR100C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTR140C\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCompatible \u003cstrong\u003eTR100C-3\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible \u003cstrong\u003eTR140C-3\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003ePentair’s Triton 100C-3 and 140C-3 documentation also identifies the equivalent square-ring closure component as part number \u003cstrong\u003e152509\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eImportant Compatibility Note\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eDo not confuse this part with \u003cstrong\u003e152511Z\u003c\/strong\u003e, which is a different Quad closure O-ring used in certain filter configurations.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eFor current Triton C\/C-3 applications, \u003cstrong\u003e152509Z is the square-profile closure ring\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eWhere Is It Installed?\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe 152509Z installs at the large top closure on the filter tank.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIt seals between:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe filter tank opening\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003e8-1\/2\" closure assembly\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe threaded closure components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eWhen compressed properly, the square ring helps contain system pressure and prevent water leakage around the closure.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eWhen Should It Be Replaced?\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eReplace the closure square ring if you notice:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater leaking around the filter lid or closure\u003c\/li\u003e\n\u003cli\u003eRing has become flattened\u003c\/li\u003e\n\u003cli\u003eCracking or splitting\u003c\/li\u003e\n\u003cli\u003eHard or brittle rubber\u003c\/li\u003e\n\u003cli\u003eVisible deformation\u003c\/li\u003e\n\u003cli\u003eSeal no longer seats evenly\u003c\/li\u003e\n\u003cli\u003eRing was damaged during filter servicing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eReplacing an aged closure seal is often inexpensive insurance against leaks after reassembling the filter.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eInstallation Information\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eBefore opening or servicing a pressurized pool filter:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eTurn the circulation pump off.\u003c\/li\u003e\n\u003cli\u003eShut off power to the equipment.\u003c\/li\u003e\n\u003cli\u003eOpen the manual air-relief valve.\u003c\/li\u003e\n\u003cli\u003eConfirm the pressure gauge reads \u003cstrong\u003e0 PSI\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eRemove the filter closure according to Pentair instructions.\u003c\/li\u003e\n\u003cli\u003eRemove and clean the existing sealing surface.\u003c\/li\u003e\n\u003cli\u003eInstall the new \u003cstrong\u003e152509Z square ring\u003c\/strong\u003e evenly.\u003c\/li\u003e\n\u003cli\u003eReinstall the closure and tighten according to Pentair procedures.\u003c\/li\u003e\n\u003cli\u003eRestart the system and inspect carefully for leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp dir=\"auto\"\u003eNever attempt to loosen a filter closure while the tank is pressurized.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eRelated Pentair Triton C \/ C-3 Parts\u003c\/h2\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003ePart Number\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e152509Z\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-1\/2\" Closure Square Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e154575Z\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-1\/2\" Closure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e154527Z\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-1\/2\" Closure Wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e154856\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-1\/2\" Closure Butt-Thread Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e156842\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC-3 Closure Kit with Bulkhead Gaskets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e152511Z\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuad Closure O-Ring – different application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003ePentair lists these components together in its current Triton C\/C-3 replacement-parts catalog. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 dir=\"auto\"\u003eWhat is Pentair 152509Z?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIt is the \u003cstrong\u003e8-1\/2\" closure square ring\u003c\/strong\u003e used on compatible Pentair Triton C and Triton C-3 fiberglass sand filters. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eIs 152509Z an O-ring?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eIt serves the same sealing purpose, but Pentair specifically describes it as a \u003cstrong\u003esquare ring\u003c\/strong\u003e, meaning its cross-section differs from a conventional round O-ring.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eDoes it fit TR100C?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. Pentair lists 152509Z in the Triton C replacement-parts family, including TR100C applications. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eDoes it fit TR140C?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eYes. It is also listed for compatible \u003cstrong\u003eTR140C\u003c\/strong\u003e configurations. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eWhat happened to part number 152509?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e152509\u003c\/strong\u003e is the older numbering seen in Pentair documentation. Pool360 currently shows 152509 as obsolete, while \u003cstrong\u003e152509Z\u003c\/strong\u003e remains the active listing. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eIs 152509Z the same as 152511Z?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eNo. \u003cstrong\u003e152511Z is a different Quad closure O-ring.\u003c\/strong\u003e Verify the filter and existing seal before ordering.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eIs the closure lid included?\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eNo. \u003cstrong\u003e152509Z is the sealing ring only.\u003c\/strong\u003e The 8-1\/2\" closure is sold separately.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":54644900888886,"sku":"152509Z","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/OIP_c502d811-62c8-4805-97e4-54fa1dd091af.jpg?v=1790271338","url":"https:\/\/poolsupplydepot.net\/products\/pentair-triton-c-c-3-8-1-2-filter-closure-square-ring-152509z","provider":"Pool Supply Depot","version":"1.0","type":"link"}