{"product_id":"pentair-system-3-tank-o-ring-24850-0008z","title":"Pentair Sta-Rite System 3 Tank O-Ring 24850-0008Z – for 21\" Filters","description":"\u003cdiv class=\"ups-product-desc\" style=\"max-width: 100%; color: #1f2937; line-height: 1.7;\"\u003e\n\u003c!-- HERO --\u003e\n\u003cdiv style=\"background: linear-gradient(135deg,#0f4c81 0%,#1273b8 100%); color: #ffffff; border-radius: 18px; padding: 24px 20px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"font-size: 13px; text-transform: uppercase; opacity: 0.9; margin-bottom: 8px;\"\u003ePool Filter Replacement Part\u003c\/div\u003e\n\u003ch2 style=\"margin: 0 0 10px 0; font-size: 30px; color: #ffffff;\"\u003ePentair Sta-Rite System 3 21\" Tank O-Ring\u003c\/h2\u003e\n\u003cp style=\"margin: 0; font-size: 16px; color: #ffffff;\"\u003e21-inch replacement tank cord O-ring for compatible Pentair Sta-Rite System 3 S7-series cartridge, D.E. and sand filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WARRANTY --\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 14px; padding: 16px; margin-bottom: 28px;\"\u003e\n\u003ch3 style=\"margin: 0 0 8px 0; font-size: 22px; color: #1e3a8a;\"\u003eWarranty Information\u003c\/h3\u003e\n\u003cp style=\"margin: 0; font-size: 16px;\"\u003e\u003cstrong\u003e1-Year Manufacturer Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 6px 0 0 0; font-size: 14px; color: #475569;\"\u003eUltimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- INTRO --\u003e\n\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair Sta-Rite System 3 21\" Tank O-Ring (24850-0008Z)\u003c\/strong\u003e, also referenced as alternate SKU \u003cstrong\u003e248500008 \u003c\/strong\u003eor\u003cstrong\u003e \u003cspan\u003e24850-0008\u003c\/span\u003e\u003c\/strong\u003e, is a replacement cord ring designed for compatible 21-inch System 3 filter tanks. Installed between the upper and lower tank sections, the O-ring provides the sealing surface required at the tank joint.\u003c\/p\u003e\n\u003cp\u003eThis replacement cord ring is confirmed for select 21-inch Pentair Sta-Rite System 3 cartridge, D.E. and sand filters, including S7M120, S7M400, S7D75 and S7S50 models. It is black and is intended for replacement when the existing tank O-ring is worn, damaged or otherwise requires replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURES --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 18px 0; color: #0f172a;\"\u003eKey Features\u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 12px;\"\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003e21\" System 3 Cord Ring\u003c\/strong\u003e\u003cbr\u003eDesigned for compatible Pentair Sta-Rite System 3 filters using the 21-inch tank configuration.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eTank Sealing Component\u003c\/strong\u003e\u003cbr\u003eFits between the mating tank sections to provide the required filter tank seal.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eMultiple Filter Types\u003c\/strong\u003e\u003cbr\u003eCompatible with confirmed System 3 cartridge, D.E. and sand filter models using the 21-inch tank.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eS7-Series Compatibility\u003c\/strong\u003e\u003cbr\u003eConfirmed for S7M120, S7M400, S7D75 and S7S50 filter models.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eAlternate SKU\u003c\/strong\u003e\u003cbr\u003ePart number 24850-0008Z may also be referenced as 248500008 or \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e24850-0008\u003c\/span\u003e.\u003c\/div\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 16px;\"\u003e\n\u003cstrong\u003eBlack Finish\u003c\/strong\u003e\u003cbr\u003eSupplied as a black replacement cord O-ring for the compatible filter tank assembly.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPATIBILITY --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px 0; color: #0f172a;\"\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 18px;\"\u003e\n\u003cp style=\"margin: 0 0 14px 0;\"\u003eConfirmed for the following 21-inch Pentair Sta-Rite System 3 filter models:\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem 3 Modular Media Cartridge Filters:\u003c\/strong\u003e S7M120, S7M400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem 3 Modular D.E. Filter:\u003c\/strong\u003e S7D75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem 3 Sand Filter:\u003c\/strong\u003e S7S50\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 16px 0 0 0; font-size: 14px; color: #475569;\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This is the cord ring for the 21-inch filter tank. Larger 25-inch System 3 models use a different cord ring. Compatibility may vary by production year, configuration and installation. Verify your exact model and part number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- APPLICATION --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px 0; color: #0f172a;\"\u003eApplications\u003c\/h3\u003e\n\u003cdiv style=\"background: #f8fafc; border: 1px solid #dbeafe; border-radius: 14px; padding: 18px;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 20px;\"\u003e\n\u003cli\u003eSystem 3 cartridge filter tank O-ring replacement\u003c\/li\u003e\n\u003cli\u003eSystem 3 D.E. filter tank O-ring replacement\u003c\/li\u003e\n\u003cli\u003eSystem 3 sand filter tank O-ring replacement\u003c\/li\u003e\n\u003cli\u003eReplacement of worn or damaged 21-inch filter tank cord rings\u003c\/li\u003e\n\u003cli\u003eFilter servicing requiring separation and resealing of the tank sections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 16px 0 0 0; font-size: 14px; color: #475569;\"\u003eConfirm that your filter uses the 21-inch tank configuration and matches one of the listed compatible models before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SPECS --\u003e\n\u003cdiv style=\"margin-bottom: 28px;\"\u003e\n\u003ch3 style=\"font-size: 24px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; border: 1px solid #e5e7eb; border-radius: 14px;\"\u003e\n\u003ctable style=\"width: 100%; min-width: 520px; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e24850-0008Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eAlternate SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e248500008 or \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e24850-0008\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003ePentair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eFilter Tank Cord O-Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e21\" Cord O-Ring for Tank Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eTank Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e21\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCompatible Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003ePentair Sta-Rite System 3 21\" Filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eS7M120, S7M400, S7D75, S7S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eFilter Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eCartridge, D.E. \u0026amp; Sand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003eSystem 3 Filter Tank Sealing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #e5e7eb;\"\u003e1-Year Manufacturer Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px;\"\u003e\u003cstrong\u003eFinal Sale\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv\u003e\n\u003ch3 style=\"font-size: 26px; margin: 0 0 16px 0; color: #0f172a;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 14px; overflow: hidden;\"\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eWhich System 3 filters use the 24850-0008Z O-ring?\u003c\/strong\u003e\u003cbr\u003eThe 24850-0008Z is confirmed for the 21-inch System 3 S7M120 and S7M400 cartridge filters, S7D75 D.E. filter and S7S50 sand filter.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eDoes this O-ring fit every Sta-Rite System 3 filter?\u003c\/strong\u003e\u003cbr\u003eNo. This is the cord ring for compatible 21-inch System 3 filter tanks. Larger 25-inch models use a different cord ring, so verify the filter model before ordering.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eIs 248500008 the same part number?\u003c\/strong\u003e\u003cbr\u003eYes. 248500008 and \u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003e24850-0008\u003c\/span\u003e are an alternate SKUs for part number 24850-0008Z.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px; border-bottom: 1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eWhere is this O-ring installed?\u003c\/strong\u003e\u003cbr\u003eThe cord O-ring is installed at the joint between the upper and lower filter tank sections to provide the tank seal.\u003c\/div\u003e\n\u003cdiv style=\"padding: 16px;\"\u003e\n\u003cstrong\u003eWhat is the warranty?\u003c\/strong\u003e\u003cbr\u003eThe Pentair Sta-Rite 24850-0008Z carries a 1-year manufacturer warranty and is a final sale item.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48664533467305,"sku":"24850-0008Z","price":99.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/2647\/4409\/files\/24850-0008Z.jpg?v=1789595470","url":"https:\/\/ultimatepools.ca\/products\/pentair-system-3-tank-o-ring-24850-0008z","provider":"ultimatepools.ca","version":"1.0","type":"link"}