{"product_id":"fluval-07-motor-head-gasket-oring-105-106-107-205-206-207","title":"Fluval 07 Motor Head Gasket\/ORing 105\/106\/107 \u0026 205\/206\/207","description":"\u003cp\u003e\u003cstrong\u003eOne perished seal is all it takes to put water on the cabinet floor.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the genuine Fluval motor head gasket, part A20038, the large O-ring that seals the motor head to the canister body. Fluval lists it across three generations of small-body canister — the 105\/205, the 106\/206 and the 107\/207 — which makes it one of the few parts an owner can buy without first working out which generation they have.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Fluval A20038\u003c\/strong\u003e — moulded to the correct section and diameter, so the head clips down with the right compression instead of being forced.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCovers three generations\u003c\/strong\u003e — 105\/205 (model codes 201 and 206), 106\/206 (A202, A207) and 107\/207 (A440, A443).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes the two classic symptoms\u003c\/strong\u003e — a slow weep down the outside of the canister, and a filter that will not hold prime because it is drawing air past the seal rather than water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheapest insurance in the cabinet\u003c\/strong\u003e — the part that fails is worth a few dollars; the water damage it causes is not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits in seconds\u003c\/strong\u003e — it sits in a moulded groove and presses home by hand. No tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eA20038\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold as\u003c\/th\u003e\n\u003ctd\u003eSingle gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePosition in filter\u003c\/th\u003e\n\u003ctd\u003eGroove in the underside of the motor head, sealing to the canister rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTools required\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\n\u003cp\u003eA20038 is the small-body gasket. The large-body canisters use a bigger seal and are not covered by this part.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter\u003c\/th\u003e\n\u003cth\u003eModel code\u003c\/th\u003e\n\u003cth\u003eTakes A20038\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 105\u003c\/td\u003e\n\u003ctd\u003e201\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 205\u003c\/td\u003e\n\u003ctd\u003e206\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 106\u003c\/td\u003e\n\u003ctd\u003eA202\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 206\u003c\/td\u003e\n\u003ctd\u003eA207\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 107\u003c\/td\u003e\n\u003ctd\u003eA440\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 207\u003c\/td\u003e\n\u003ctd\u003eA443\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluval 305, 405, 306, 406, 307, 407\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFluval does not list A20038 for the 305\/405, 306\/406 or 307\/407. Those canisters have a larger head seal listed separately against their own model codes — check the parts list for your model rather than assuming the small-body ring will stretch to fit, because a seal on the wrong compression leaks worse than the perished one you removed.\u003c\/p\u003e\n\n\u003ch3\u003eWhich canisters is this for?\u003c\/h3\u003e\n\u003cp\u003eThe three generations A20038 covers are the two smallest Fluval canisters in each range. These are the current 07 figures, for sizing against a tank.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eAquarium capacity\u003c\/th\u003e\n\u003cth\u003ePump output (empty)\u003c\/th\u003e\n\u003cth\u003eFilter circulation (media loaded)\u003c\/th\u003e\n\u003cth\u003eMax head\u003c\/th\u003e\n\u003cth\u003ePower at 240 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e107\u003c\/td\u003e\n\u003ctd\u003e40–130 L\u003c\/td\u003e\n\u003ctd\u003e550 L\/h\u003c\/td\u003e\n\u003ctd\u003e360 L\/h\u003c\/td\u003e\n\u003ctd\u003e1.45 m\u003c\/td\u003e\n\u003ctd\u003e10 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e207\u003c\/td\u003e\n\u003ctd\u003e60–220 L\u003c\/td\u003e\n\u003ctd\u003e780 L\/h\u003c\/td\u003e\n\u003ctd\u003e460 L\/h\u003c\/td\u003e\n\u003ctd\u003e1.45 m\u003c\/td\u003e\n\u003ctd\u003e10 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x motor head gasket O-ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe AquaStop valve seals.\u003c\/strong\u003e Those are separate, and they are a different leak point higher up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilicone grease.\u003c\/strong\u003e Fluval does not supply it with the gasket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe motor head.\u003c\/strong\u003e This is the seal only — see the \u003ca href=\"\/products\/fluval-07-motor-head-107\"\u003e107 motor head\u003c\/a\u003e or the \u003ca href=\"\/products\/fluval-07-motor-head-207\"\u003e207 motor head\u003c\/a\u003e if the head itself has failed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for a canister that weeps at the joint between head and body, one that will not hold prime, and any small-body Fluval that has been opened many times over several years. Also worth fitting as routine on a second-hand filter before it goes near a cabinet.\u003c\/p\u003e\n\u003cp\u003eNot suitable for the 305, 405, 306, 406, 307 or 407, or for the FX Series. It will not stop a leak at the hose connections or at the AquaStop, which are different seals entirely — dry everything and watch where the water actually appears before buying a part.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eFluval's own guidance is to keep the gasket clean and lubricated. Wipe the groove and the ring at every service, and use a smear of silicone-based lubricant, never petroleum jelly, which degrades rubber. Replace the ring when it has gone hard, flattened into a permanent oval, or shows any nick along the sealing face. A gasket that has taken a set will seal on the bench and weep once the filter is running under head.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-07-impeller-w-ceramic-shaft-rubbers-107-207\"\u003e107\/207 impeller with ceramic shaft (A20109)\u003c\/a\u003e — the other wear part worth replacing while the head is off\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-06-07-ceramic-impeller-shaft-with-rubber-bushing\"\u003eCeramic impeller shaft and bushing (A20039)\u003c\/a\u003e — for a canister that has gone noisy\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-07-basket-cover-107-207\"\u003e107\/207 media basket cover\u003c\/a\u003e — stops water bypassing the media\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/fluval-07-primer-assembly-107-407\"\u003e07 Series primer assembly\u003c\/a\u003e — if the filter still will not prime after a new gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eSupplied as a genuine Fluval replacement part. Your rights under the Australian Consumer Law apply in full and nothing here limits them. Fluval does not quote a separate warranty term on rubber service parts. Ships as a standard small parcel anywhere in Australia.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eDoes the Fluval A20038 gasket fit a 307 or 407?\u003c\/h4\u003e\n\u003cp\u003eNo. Fluval lists A20038 for the 105\/205, 106\/206 and 107\/207 only. The larger canisters use a bigger head seal listed against their own model codes.\u003c\/p\u003e\n\u003ch4\u003eHow often should the motor head gasket be replaced?\u003c\/h4\u003e\n\u003cp\u003eFluval does not publish a fixed interval. Replace on condition — when the ring has hardened, taken a permanent flat, or nicked. Many owners change it every couple of years as cheap insurance.\u003c\/p\u003e\n\u003ch4\u003eMy filter leaks a little after every clean. Is the gasket the cause?\u003c\/h4\u003e\n\u003cp\u003eUsually it is the gasket, or the gasket seated badly. Check the ring is fully in its groove with no twist, and that nothing — a strand of filter wool is the classic — is trapped across the sealing face.\u003c\/p\u003e\n\u003ch4\u003eWhat lubricant should I use on it?\u003c\/h4\u003e\n\u003cp\u003eA silicone-based lubricant only. Petroleum jelly and mineral oils swell and perish the rubber, and a swollen ring will not seat in its groove.\u003c\/p\u003e\n\u003ch4\u003eWill one gasket do a 106 and a 107?\u003c\/h4\u003e\n\u003cp\u003eThe same part number serves both, so a spare on the shelf covers either filter. You need one gasket per canister; they are sold singly.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293304340771,"sku":"FVL012","price":21.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-07-motor-head-gasket-43875497967907.webp?v=1790236915","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-07-motor-head-gasket-oring-105-106-107-205-206-207","provider":"Nicks AOT","version":"1.0","type":"link"}