{"product_id":"o-ring-for-astralpool-hurlcon-zx-cartridge-filters","title":"Astralpool ZX \/ Zodiac ZCF Cartridge Filter O-Ring Seal - MKII","description":"\u003c!-- HASP-FLP-1.0 | SKU 78110 | product ZX tank o-ring | rule ZXO-1.0 | canary: zx-oring-echo-78110 --\u003e\u003ch3\u003eAstralpool ZX \/ Zodiac ZXC Cartridge Filter Lid O-Ring (Tank Seal) - 78110 \/ 78105\u003c\/h3\u003e\u003cp\u003eThis is the genuine Astralpool \u003cstrong\u003elid O-ring\u003c\/strong\u003e - also called the \u003cstrong\u003etank O-ring\u003c\/strong\u003e or \u003cstrong\u003elid seal\u003c\/strong\u003e - for the \u003cstrong\u003eZX-family cartridge filter\u003c\/strong\u003e, current part number \u003cstrong\u003e78110\u003c\/strong\u003e (old number \u003cstrong\u003e78105\u003c\/strong\u003e). It seals the filter lid to the tank body. One O-ring fits the whole ZX range. Replace it if the filter lid is leaking, weeping, drawing air or hard to tighten, or if the old seal is flattened, cracked, stretched or perished.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003ePhysically Stocked, unlike most \"drop-shipping\" websites.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003eShipped from VIC, NSW, WA, QLD\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is the same filter sold under several brands - Astralpool ZX, Hurlcon ZX, \u003cstrong\u003eZodiac ZXC\u003c\/strong\u003e, Zodiac ZCF \/ Titan ZCF, Astral SMART, Filtrite CF and Aquatight. The Zodiac ZXC is simply the Zodiac-badged Astralpool ZX.\u003c\/p\u003e\u003ch3\u003eIdentification\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eGenuine Astralpool part\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent part number:\u003c\/strong\u003e 78110\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOld \/ superseded number:\u003c\/strong\u003e 78105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate size:\u003c\/strong\u003e 280mm outside diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e approximately 5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram reference:\u003c\/strong\u003e Item 4 on many ZX diagrams, Item 7 on some ZCF diagrams\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFits Across The ZX Range\u003c\/h3\u003e\u003cp\u003eOne tank O-ring fits every ZX-family filter, from the ZX50 to the ZX310:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstralpool ZX \/ Hurlcon ZX:\u003c\/strong\u003e ZX50 to ZX310\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZodiac ZXC:\u003c\/strong\u003e ZXC50 to ZXC310\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZodiac ZCF \/ Titan ZCF:\u003c\/strong\u003e ZCF75 to ZCF200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstral SMART:\u003c\/strong\u003e SMART 350 \/ 450 \/ 550\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltrite CF \/ Aquatight:\u003c\/strong\u003e ZX-style cartridge filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstral IX \/ IX50\u003c\/strong\u003e in-line leaf canister (same tank O-ring)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Note\u003c\/h3\u003e\u003cp\u003eClean the lid and tank sealing groove before fitting the new O-ring - dirt, grit, old lubricant and calcium build-up will stop the lid sealing correctly. Apply a light smear of \u003cstrong\u003esilicone-based O-ring lubricant\u003c\/strong\u003e before refitting. Do not use petroleum grease, as it swells and damages rubber seals. It is good practice to fit a new O-ring whenever you fit a new lid, since the old seal has taken a set to the old lid's sealing face.\u003c\/p\u003e\u003ch3\u003eCheck For Hairline Cracks While You Have It Apart\u003c\/h3\u003e\u003cp\u003eChanging the lid O-ring means the filter is open, which is the ideal time to inspect the tank and lid for cracks. Look closely at the inside of the tank neck where the lid threads engage - hairline cracks there can be almost invisible and open up under pressure. Run a fingernail around the thread root and check in good light. \u003cstrong\u003eIf you find any crack anywhere on the tank body, lid or locking ring, the entire filter must be replaced.\u003c\/strong\u003e A cracked pressure vessel can fail under load, and no glue or sealant is safe on a filter that runs under pump pressure.\u003c\/p\u003e\u003ch3\u003eWhen To Replace This O-Ring\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWater leaks or weeps from around the filter lid\u003c\/li\u003e\n\u003cli\u003eThe lid is hard to tighten or does not seat smoothly\u003c\/li\u003e\n\u003cli\u003eThe pump draws air through the filter lid\u003c\/li\u003e\n\u003cli\u003eThe old O-ring is flat, brittle, cracked, swollen or stretched\u003c\/li\u003e\n\u003cli\u003eThe lid has been off for cartridge cleaning and the seal no longer sits properly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNeed The Complete Lid Assembly?\u003c\/h3\u003e\u003cp\u003eIf the lid, locking ring or handles are also damaged, you may need the complete lid assembly rather than just the O-ring. \u003ca href=\"https:\/\/heaterandspaparts.com.au\/products\/lid-for-astralpool-zx-smart-cartridge-filters\"\u003eClick here for the Astralpool ZX \/ ZXC cartridge filter lid assembly - SP7820502\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWill Not Fit\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHurlcon QX\u003c\/strong\u003e - a different filter with a 222mm lid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstralpool XC\u003c\/strong\u003e - a separate, unrelated filter series. \u003ca href=\"mailto:info@hasp.com.au\"\u003eContact us\u003c\/a\u003e with your model and a photo.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePart Numbers \u0026amp; Search References\u003c\/h3\u003e\u003cp\u003e78110 · 78105 · O Ring Lid ZX Filter MK2 · ZX cartridge filter lid O-ring · ZX cartridge filter tank O-ring · ZCF cartridge filter lid O-ring · Zodiac ZXC lid seal · Astralpool ZX lid seal · Hurlcon ZX lid seal · 280mm cartridge filter O-ring.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDoes one O-ring fit all ZX filters?\u003c\/strong\u003e\u003cbr\u003eYes. The same tank O-ring, part 78110, fits every ZX-family filter from the ZX50 to the ZX310.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMy filter is a Zodiac ZXC. Is this the right O-ring?\u003c\/strong\u003e\u003cbr\u003eYes. The Zodiac ZXC is the same filter as the Astralpool ZX, just Zodiac-badged, so this O-ring fits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMy filter is an Astralpool XC. Is this the right O-ring?\u003c\/strong\u003e\u003cbr\u003eNo. The XC is a separate, unrelated filter series and does not use the ZX tank O-ring. Contact us with your model and a photo and we will match the correct part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a new O-ring if I am fitting a new lid?\u003c\/strong\u003e\u003cbr\u003eStrongly recommended. The old O-ring has conformed to the old lid's sealing face and is the usual reason a brand new lid still weeps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat lubricant should I use?\u003c\/strong\u003e\u003cbr\u003eA silicone-based O-ring lubricant only. Never use petroleum grease, which swells and destroys the rubber.\u003c\/p\u003e\u003ch3\u003eManufacturer Catalogues, Diagrams \u0026amp; Part Numbers\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNeed exploded views, spare part numbers, product numbers, diagrams, or more product information?\u003c\/strong\u003e See the manufacturer catalogues: \u003ca href=\"https:\/\/hasp.com.au\/pages\/Astralpool_Catalogue_2026\"\u003eAstralpool Catalogue 2026\u003c\/a\u003e | \u003ca href=\"https:\/\/hasp.com.au\/pages\/Zodiac_Catalogue_2026\"\u003eZodiac Catalogue 2026\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eAs with all products, these must be diagnosed and fitted by a qualified and experienced person.\u003c\/p\u003e\u003c!-- \/HASP-FLP-1.0 78110 canary-end zx-oring-echo --\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"FAQPage\",\"@id\":\"https:\/\/heaterandspaparts.com.au\/products\/o-ring-for-astralpool-hurlcon-zx-cartridge-filters#faq\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does one O-ring fit all ZX filters?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The same tank O-ring, part 78110, fits every ZX-family filter from the ZX50 to the ZX310.\"}},{\"@type\":\"Question\",\"name\":\"My filter is a Zodiac ZXC. Is this the right O-ring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The Zodiac ZXC is the same filter as the Astralpool ZX, just Zodiac-badged, so this O-ring fits.\"}},{\"@type\":\"Question\",\"name\":\"My filter is an Astralpool XC. Is this the right O-ring?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. The XC is a separate, unrelated filter series and does not use the ZX tank O-ring. Contact us with your model and a photo and we will match the correct part.\"}},{\"@type\":\"Question\",\"name\":\"Do I need a new O-ring if I am fitting a new lid?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Strongly recommended. The old O-ring has conformed to the old lid's sealing face and is the usual reason a brand new lid still weeps.\"}},{\"@type\":\"Question\",\"name\":\"What lubricant should I use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A silicone-based O-ring lubricant only. Never use petroleum grease, which swells and destroys the rubber.\"}}]},{\"@type\":\"HowTo\",\"@id\":\"https:\/\/heaterandspaparts.com.au\/products\/o-ring-for-astralpool-hurlcon-zx-cartridge-filters#howto\",\"name\":\"How to fit the tank O-ring on an Astralpool ZX cartridge filter\",\"step\":[{\"@type\":\"HowToStep\",\"name\":\"Depressurise and open\",\"text\":\"Shut down the pump, isolate power, release pressure at the air bleed, then undo the locking ring and lift off the lid.\"},{\"@type\":\"HowToStep\",\"name\":\"Remove the old O-ring\",\"text\":\"Lift out the old tank O-ring and clean the groove and sealing faces of grit, old lubricant and calcium.\"},{\"@type\":\"HowToStep\",\"name\":\"Fit and lubricate the new O-ring\",\"text\":\"Seat the new 78110 O-ring in the groove and apply a light smear of silicone-based lubricant. Do not use petroleum grease.\"},{\"@type\":\"HowToStep\",\"name\":\"Refit and recommission\",\"text\":\"Refit the lid, hand-tighten the locking ring, then open the air bleed on start-up until water flows and note the clean starting pressure.\"}]}]}\u003c\/script\u003e","brand":"Astralpool","offers":[{"title":"Default Title","offer_id":31552038797369,"sku":"78110","price":44.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/astralpool-zx-zodiac-zcf-cartridge-filter-o-ring-seal-mkii-parts-819.webp?v=1784848266","url":"https:\/\/heaterandspaparts.com.au\/en-nz\/products\/o-ring-for-astralpool-hurlcon-zx-cartridge-filters","provider":"Heater and Spa Parts","version":"1.0","type":"link"}