{"product_id":"pentair-195339-backup-ring-fns-plus-cnc-plus-stainless-steel","title":"Pentair 195339 Backup Ring FNS Plus CNC Plus Stainless Steel","description":"\u003cp\u003e\u003cstrong\u003eWhat This Part Is Used For\u003c\/strong\u003e\u003cbr\u003ePentair 195339 Backup Ring FNS Plus CNC Plus Stainless Steel is a replacement backup ring for compatible Pentair FNS Plus and CNC Plus filter systems. It supports proper sealing within stainless steel filter assemblies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy This Part Matters\u003c\/strong\u003e\u003cbr\u003eA backup ring helps maintain correct O-ring compression under pressure. Replacing a worn ring restores secure sealing and prevents leaks. Proper internal sealing protects filter performance and system pressure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features and Specifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number 195339\u003c\/li\u003e\n\u003cli\u003eBackup ring\u003c\/li\u003e\n\u003cli\u003eFor FNS Plus and CNC Plus stainless steel filters\u003c\/li\u003e\n\u003cli\u003eSupports internal sealing\u003c\/li\u003e\n\u003cli\u003eReplacement filter component\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstallation and Fitment Guidance\u003c\/strong\u003e\u003cbr\u003eRelieve filter pressure before disassembly. Confirm by manufacturer part number before ordering. Inspect O-rings and sealing surfaces during installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout the Pentair Brand\u003c\/strong\u003e\u003cbr\u003ePentair FNS Plus and CNC Plus filters are widely used in pool systems. Their stainless steel assemblies are engineered for durability and serviceability. Genuine Pentair parts help maintain proper filtration performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon Service Context\u003c\/strong\u003e\u003cbr\u003eCommon during filter rebuilds, replacing internal seals, or resolving minor pressure leaks.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52078603567378,"sku":"195339","price":67.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/PEN195339_0.jpg?v=1772562843","url":"https:\/\/www.aquaterrabackyard.com\/products\/pentair-195339-backup-ring-fns-plus-cnc-plus-stainless-steel","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}