{"product_id":"bioscape-adaptor-head-seal-ring-for-qhu18d-bis30-31","title":"Bioscape Adaptor Head Seal Ring for QHU18d \/BIS30 \u0026 31","description":"\u003cp\u003e\u003cstrong\u003eThe seal that keeps your Tropic canister's head watertight.\u003c\/strong\u003e This adaptor head seal ring (Bioscape's QHU18d design) is the genuine replacement O-ring for the inlet\/outlet head assembly on the Bioscape Tropic Canister Filter 800 lph (BIS30) and 1200 lph (BIS31).\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Bioscape part\u003c\/strong\u003e — matched to the QHU18d head, not a generic O-ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeals the head-to-canister union\u003c\/strong\u003e — the most common point for a slow drip or weeping leak on these filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo tools needed\u003c\/strong\u003e — lifts off the old ring and seats the new one by hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheap insurance\u003c\/strong\u003e — replacing a seal ring costs a fraction of a flooded cabinet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eBioscape Tropic Canister Filter 800 lph (BIS30) and 1200 lph (BIS31)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead type\u003c\/th\u003e\n\u003ctd\u003eQHU18d adaptor head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003ctd\u003eAdaptor head seal ring \/ O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eQHU18L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold as\u003c\/th\u003e\n\u003ctd\u003eSingle seal ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for BIS30 and BIS31 only. Not suitable for the 1800 lph (BIS32), 2200 lph (BIS33) or 2200 lph UV 9W (BIS34) models — those use the larger QHU18e head and take the \u003ca href=\"\/products\/bioscape-adaptor-head-seal-ring-for-qhu18e-bis32-33-34\"\u003eQHU18e seal ring\u003c\/a\u003e instead. Fitting the wrong ring will not seal properly and can leak.\u003c\/p\u003e\u003ch3\u003eFitting\u003c\/h3\u003e\u003cp\u003eSymptom this fixes: a slow weep or drip where the filter head meets the canister body, usually noticed as a damp patch under the unit. Depressurise and disconnect the filter, separate the head from the canister, lift out the old ring, seat the new one in the same groove, and reassemble. No tools required.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSold as a spare part; not separately warranted beyond standard consumer guarantees under Australian Consumer Law. Standard freight applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow do I know if I need this seal or the QHU18e one?\u003c\/h4\u003e\u003cp\u003eCheck your filter's flow rate. 800 lph (BIS30) and 1200 lph (BIS31) use the QHU18d head and take this ring. 1800 lph, 2200 lph and 2200 lph UV models use the larger QHU18e head.\u003c\/p\u003e\u003ch4\u003eMy filter is dripping at the head — is this the fix?\u003c\/h4\u003e\u003cp\u003eA perished or compressed seal ring is the most common cause of a leak at the head join on these filters, and it's worth replacing first before assuming a bigger fault.\u003c\/p\u003e\u003ch4\u003eDo I need any tools to fit it?\u003c\/h4\u003e\u003cp\u003eNo — it lifts off and seats back on by hand.\u003c\/p\u003e\u003ch4\u003eDoes this come as a set of multiple rings?\u003c\/h4\u003e\u003cp\u003eNo, this listing is one seal ring.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55293073883427,"sku":"QHU18L","price":3.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/QHU18l_6.png?v=1782871276","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/bioscape-adaptor-head-seal-ring-for-qhu18d-bis30-31","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}