{"product_id":"tank-o-ring-fns-filter","title":"SuperPro Tank O-Ring for FNS Filter","description":"\u003cp\u003eThis is the tank o-ring for the FNS filter body, the seal that runs around the joint between the two halves of the tank and holds pressure once the clamp band is torqued down. It measures 19-1\/8 in. inside diameter with a 3\/8 in. cross section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe ring is listed for the FNS Polymeric FNS24, FNS36, FNS48 and FNS60 filters, and for the Sea Horse FSH fiberglass tank. Over the years the same ring has been sold under several numbers, so a replacement labeled O-420, 195008, 4600-5008, 66500 or 90-423-1420 is the same part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA tank o-ring that has taken a set, flattened or cracked will weep at the band, usually as a slow drip that only shows up once the pump is running. Because the filter has to be opened either way, most techs fit a fresh ring any time the band comes off for a grid service rather than reusing a ring that is already years old. A light film of pool grade silicone lubricant helps it seat cleanly and makes the next teardown easier.\u003c\/p\u003e","brand":"Aladdin","offers":[{"title":"Default Title","offer_id":48633933103316,"sku":"SPG-601-1192","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_218efe82-c1a3-449c-9c24-9d53d0a6bc3b.png?v=1788817603","url":"https:\/\/www.activepoolsupply.com\/products\/tank-o-ring-fns-filter","provider":"Active Pool Supply","version":"1.0","type":"link"}