{"product_id":"o-ring-for-filter-head","title":"Hayward OEM O-Ring for Filter Head","description":"\u003cp\u003eThe Hayward CX800F is the filter head o-ring for the Star-Clear II cartridge filter, in the C800, C1100 and C1500 sizes. It measures 9-1\/2 inches in diameter and is a genuine Hayward part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it sits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is the large seal on the joint between the filter head and the filter body. It has to hold that whole seam against system pressure, which is why a tired one shows up as a steady weep or spray right at the split line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eReplace it with the cartridge\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe seal is disturbed every time the filter comes apart. It stretches, takes a set in the groove, and eventually stops sealing on reassembly. Since the housing is already open when you service the cartridge, that is the moment to put a fresh o-ring in rather than reuse the old one and open it all up again.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove and the mating face before the new seal goes in, and use a lubricant intended for pool o-rings. Petroleum products attack the rubber and shorten its life.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48626497552596,"sku":"HAY-051-1780","price":43.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4ffecdad-4874-4a60-9aba-f842f24fcc4b.png?v=1788710980","url":"https:\/\/www.activepoolsupply.com\/products\/o-ring-for-filter-head","provider":"Active Pool Supply","version":"1.0","type":"link"}