{"product_id":"3-4-mechanical-seal","title":"Astralpool 3\/4\" Type 6 Mechanical Seal - Astralpool, Hurlcon, Poolrite, Waterway and others","description":"\u003ch3\u003eAstralpool 3\/4\" Type 6 Mechanical Seal - Astralpool, Hurlcon, Poolrite, Waterway and others\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003e3\/4\" Type 7 Premium Mechanical Seal\u003c\/strong\u003e \u003cstrong\u003efor Pool and Spa Pumps \u003c\/strong\u003e– the most common mechanical seal size used across many Australian pool \u0026amp; spa pumps. This is a \u003cstrong\u003ehigher-quality seal\u003c\/strong\u003e (better rubbers + better carbon\/ceramic faces) than many of the cheap “look-alike” seals online.\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\n\u003cp\u003eNote: Appearance of this style mechanical seal has changed and differs between manufacturers. The appearance is not important, as they abide by certain measurements and tolerances.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat This Seal Is\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal type:\u003c\/strong\u003e 3\/4\" Type 7 mechanical seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJob:\u003c\/strong\u003e seals the motor shaft (between wet end and motor) to stop leaks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild:\u003c\/strong\u003e stainless hardware, ceramic face + carbon face, quality elastomers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter shaft sealing:\u003c\/strong\u003e bellows-style spring section (often seals better than cheap quad-ring styles)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions \u0026amp; specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOD of ceramic base:\u003c\/strong\u003e ~35.1–35.4mm (including rubber)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eID of spring section (shaft seal):\u003c\/strong\u003e ~17.8mm (for 3\/4\" shafts)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height:\u003c\/strong\u003e ~32–34mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum compression (working height):\u003c\/strong\u003e ~22mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e stainless steel hardware, ceramic face, carbon face, quality elastomers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eCommon cross references:\u003c\/em\u003e 75509, FL-PS3868, BP02-USA-0191, Davey \u003cspan\u003e400442SP\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSuits these pumps (common fitment lists)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAstralpool \/ Hurlcon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCX Series:\u003c\/strong\u003e CX180, CX240, CX280, CX320, CX400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTX Series:\u003c\/strong\u003e TX 3\/4, TX 1.0, TX 1.5, TX 2.0, TX 3.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCTX Series:\u003c\/strong\u003e CTX180, CTX280 \/ 280C, CTX360C, CTX400 \/ 400C, CTX500 \/ 500C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-Series:\u003c\/strong\u003e E140 \/ E140C, E170 \/ E170C, E230 \/ E230C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBX Series:\u003c\/strong\u003e BX 1.0, BX 1.5, BX 2.0, BX 3.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXP Series:\u003c\/strong\u003e XP 1.5, XP 2.0, XP 3.0 (including common 3-phase variants)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXF Series:\u003c\/strong\u003e XF140, XF250, XF520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFX Series:\u003c\/strong\u003e FX140, FX190, FX250, FX340, FX520\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpa-quip (SpaQuip) \/ Maxiflow (spa pumps)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaxiflow \/ Spa-quip:\u003c\/strong\u003e Monster, Magnum (commonly suits “most \/ all” of this family)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpaPro:\u003c\/strong\u003e 1.5, 2.0, 2.5, 3.0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOnga \/ Pentair \/ Sta-Rite (common AU ranges)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnga:\u003c\/strong\u003e SilentFlo, Pantera\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSta-Rite:\u003c\/strong\u003e Max-E-Pro, ECO800, Duraglass 11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentair:\u003c\/strong\u003e WhisperFlo XF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso commonly referenced:\u003c\/strong\u003e Leisuretime LTP1100, Enviromax\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHayward (common 3\/4\" seal families)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuper Pump:\u003c\/strong\u003e SP1600 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuper Pump:\u003c\/strong\u003e SP2600 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuper Pump:\u003c\/strong\u003e SP2800 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOften also in these families (verify):\u003c\/strong\u003e Super II, Max-Flo \/ MaxFlo, TriStar, NorthStar, EcoStar (and variants)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWaterco (common families)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAquamite\u003c\/li\u003e\n\u003cli\u003eAquaswim (incl Aquaswim 40 \/ 40C \/ 50T families)\u003c\/li\u003e\n\u003cli\u003eAquastream (older + newer generations)\u003c\/li\u003e\n\u003cli\u003eAquastream Solar \/ Solar MKII\u003c\/li\u003e\n\u003cli\u003eSupastream\u003c\/li\u003e\n\u003cli\u003eSupatuf\u003c\/li\u003e\n\u003cli\u003eHydrotuf\u003c\/li\u003e\n\u003cli\u003eHydrostorm \/ Hydrostorm Plus \/ Hydrostorm ECO 3 Speed\u003c\/li\u003e\n\u003cli\u003eHydrostar (incl MK3 \/ 200–350 \/ 350 families)\u003c\/li\u003e\n\u003cli\u003eTurbotuf\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePoolrite\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnduro:\u003c\/strong\u003e EP550, EP750, EP930, EP1100, EP1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSQI:\u003c\/strong\u003e SQI300, SQI400, SQI500, SQI600, SQI700, SQI Gemini\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDavey \/ Monarch (often referenced in seal cross-refs)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJetflow \/ Jetflo\u003c\/li\u003e\n\u003cli\u003ePowerflow\u003c\/li\u003e\n\u003cli\u003ePowerplus\u003c\/li\u003e\n\u003cli\u003eStorm\u003c\/li\u003e\n\u003cli\u003eWisper\u003c\/li\u003e\n\u003cli\u003eTyphoon C Series (post-2007)\u003c\/li\u003e\n\u003cli\u003eWWDG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEmaux (commonly referenced)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eE-Power\u003c\/li\u003e\n\u003cli\u003eSuper Power SCUS Series\u003c\/li\u003e\n\u003cli\u003eSB \/ SC \/ SR series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOther brands often seen in cross-refs (verify by measurement)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFiltermaster\u003c\/li\u003e\n\u003cli\u003ePoolstore\u003c\/li\u003e\n\u003cli\u003eStroud\u003c\/li\u003e\n\u003cli\u003ePowerplus (also listed above under Monarch\/Davey cross-refs)\u003c\/li\u003e\n\u003cli\u003eQuiptron, Questa, FPI, WWDG (and other legacy \/ house-brand pumps)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDon’t get caught (read this before ordering)\u003c\/h3\u003e\n\u003cp\u003e“3\/4\" describes the \u003cstrong\u003eshaft size\u003c\/strong\u003e, but it does \u003cstrong\u003enot\u003c\/strong\u003e guarantee the seal will be correct. Pumps can vary by \u003cstrong\u003eseal style\u003c\/strong\u003e, \u003cstrong\u003eseal plate\u003c\/strong\u003e, \u003cstrong\u003eworking height\u003c\/strong\u003e, and \u003cstrong\u003egeneration\u003c\/strong\u003e (even within the same model family).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest practice:\u003c\/strong\u003e match the seal by \u003cstrong\u003emeasurements\u003c\/strong\u003e (ceramic OD, spring\/shaft ID, and assembled\/working height).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf unsure:\u003c\/strong\u003e send us your \u003cstrong\u003epump make\/model\u003c\/strong\u003e plus a \u003cstrong\u003ephoto of the old seal\u003c\/strong\u003e (or seal plate) so we can help confirm fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon signs it’s wrong:\u003c\/strong\u003e leaking soon after install, poor compression, seal not sitting square, overheated faces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse \u003cstrong\u003ewater-based lubrication\u003c\/strong\u003e only (avoid petroleum-based products on elastomers).\u003c\/li\u003e\n\u003cli\u003eDo \u003cstrong\u003enot twist\u003c\/strong\u003e the spring section when fitting onto the shaft.\u003c\/li\u003e\n\u003cli\u003eIf the seal plate is worn\/thinned, you can use a small amount of \u003cstrong\u003emarine silicone\u003c\/strong\u003e on the \u003cstrong\u003eoutside rubber-to-seal-plate\u003c\/strong\u003e only (do not use sealant on the spring\/shaft section).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #ff2a00;\"\u003eNever run dry.\u003c\/span\u003e\u003c\/strong\u003e A dry-running pump can overheat and destroy a new seal within seconds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat you’ll receive\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x \u003cstrong\u003e3\/4\" Type 7 Premium Mechanical Seal\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eCX 180, CX 240, CX 280, CX 320, CX 400, TX 3\/4, TX 1.0, TX 1.5, TX 2.0, TX 3.0, CTX 180, CTX 280, CTX 280C, CTX 360C, CTX 400, CTX 400C, CTX 500, CTX 500C, E 140, E 140C, E 170, E 170C, E 230, E 230C, BX 1.0, BX 1.5, BX 2.0, BX 3.0, XP 1.5, XP 2.0, XP 3.0, XF 140, XF 250, XF 520, FX 140, FX 190, FX 250, FX 340, FX 520, Monster, Magnum, SilentFlo, Pantera, Max-E-Pro, ECO 800, Duraglass 11, WhisperFlo XF, Leisuretime LTP 1100, Enviromax, SP 1600 Series, SP 2600 Series, SP 2800 Series, Aquamite, Aquaswim 40, Aquaswim 40C, Aquaswim 50T, Aquastream, Aquastream Solar, Solar MKII, Supastream, Supatuf, Hydrotuf, Hydrostorm, Hydrostorm Plus, Hydrostorm ECO 3 Speed, Hydrostar, Hydrostar MK 3, Hydrostar 200–350, Hydrostar 350, Turbotuf, Enduro EP 550, Enduro EP 750, Enduro EP 930, Enduro EP 1100, Enduro EP 1500, SQI 300, SQI 400, SQI 500, SQI 600, SQI 700, SQI Gemini, Jetflow, Jetflo, Powerflow, Powerplus, Storm, Wisper, Typhoon C Series (post-2007), E-Power, Super Power SCUS Series, SB Series, SC Series, SR Series\u003c\/em\u003e\u003c\/p\u003e\n\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? See the manufacturer catalogues:\n \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\n\u003c\/strong\u003e\u003c\/p\u003e","brand":"Astralpool","offers":[{"title":"Default Title","offer_id":43859606569149,"sku":"PS3868 (was 75509)","price":39.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/astralpool-3-4-type-6-mechanical-seal-hurlcon-poolrite-waterway-and-others-833.webp?v=1780305522","url":"https:\/\/heaterandspaparts.com.au\/en-nz\/products\/3-4-mechanical-seal","provider":"Heater and Spa Parts","version":"1.0","type":"link"}