{"product_id":"pool-filter-drain-cap-sealing-gasket-leak-proof-plug","title":"Pool Filter Drain Cap with Sealing Gasket – Leak-Proof Plug","description":"\n\u003ch2\u003ePool Filter Drain Cap with Sealing Gasket – Secure, Durable \u0026amp; Leak-Proof\u003c\/h2\u003e\n\n\u003cp\u003eKeep your pool filtration system running smoothly with this \u003cstrong\u003ePool Filter Drain Cap with Sealing Gasket\u003c\/strong\u003e. Designed as a reliable replacement drain plug for pool sand filters, this cap delivers a tight, secure seal every time — preventing unwanted drips and keeping your filtration system operating at peak efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Layer Seal Protection:\u003c\/strong\u003e Features a built-in high-elastic rubber O-ring paired with a threaded plastic cap, providing two layers of protection against leaks and drips at filter drain outlets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Strength Engineering Plastic:\u003c\/strong\u003e Constructed from premium engineering-grade plastic that resists aging, corrosion, and wear — remaining crack-free and structurally sound even in chlorinated pool water environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Designed to be compatible with a range of pool sand filter models (including 602-5321 and 602-5320), making it an easy drop-in replacement for worn or damaged drain caps.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRubber + Plastic Construction:\u003c\/strong\u003e The combination of high-strength engineering plastic and a rubber sealing gasket ensures a long-lasting, watertight fit that holds up season after season.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Simple threaded design means no special tools required — just thread in by hand for a firm, secure fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-strength engineering plastic + rubber O-ring gasket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e 602-5321, 602-5320 (and similar pool sand filter systems)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Threaded cap with integrated sealing gasket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Pool sand filter drain outlet\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Upgrade Your Drain Cap?\u003c\/h3\u003e\n\u003cp\u003eA worn or cracked drain cap can lead to water loss and reduced filtration performance. This replacement pool filter drain cap ensures your system stays sealed and efficient, protecting your pool equipment investment and making maintenance hassle-free.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eExplore more products for your home and DIY projects:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/natural-stone-abacus-beads-flat-round-spacer-diy-jewelry-making\"\u003eNatural Stone Abacus Beads 5x8mm Flat Round Spacer for DIY Jewelry\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What pool filter models is this drain cap compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This pool filter drain cap with sealing gasket is compatible with pool sand filter models 602-5321 and 602-5320, as well as similar threaded drain outlet systems. If you're unsure about compatibility, check your filter's drain outlet thread size before ordering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What materials is the pool filter drain cap made from?\u003c\/h4\u003e\n\u003cp\u003eA: The drain cap body is made from high-strength engineering plastic that resists corrosion, aging, and wear — even in chlorinated environments. It also includes a built-in high-elastic rubber O-ring gasket that creates a watertight seal at the filter drain outlet.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the sealing gasket prevent leaks?\u003c\/h4\u003e\n\u003cp\u003eA: The integrated rubber O-ring gasket works in tandem with the threaded plastic cap to create a dual-layer seal at the filter drain outlet. When tightened, the O-ring compresses to fill any gaps, blocking water from escaping and ensuring stable, drip-free operation of your pool filtration system.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this drain cap easy to install?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The threaded design allows for simple hand-tightening — no special tools or plumbing experience required. Just remove the old or damaged cap, clean the threads on your filter, and thread this replacement cap in securely for an instant, watertight fit.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What pool filter models is this drain cap compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This pool filter drain cap with sealing gasket is compatible with pool sand filter models 602-5321 and 602-5320, as well as similar threaded drain outlet systems. If you're unsure about compatibility, check your filter's drain outlet thread size before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"What materials is the pool filter drain cap made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The drain cap body is made from high-strength engineering plastic that resists corrosion, aging, and wear — even in chlorinated environments. It also includes a built-in high-elastic rubber O-ring gasket that creates a watertight seal at the filter drain outlet.\"}}, {\"@type\": \"Question\", \"name\": \"How does the sealing gasket prevent leaks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The integrated rubber O-ring gasket works in tandem with the threaded plastic cap to create a dual-layer seal at the filter drain outlet. When tightened, the O-ring compresses to fill any gaps, blocking water from escaping and ensuring stable, drip-free operation of your pool filtration system.\"}}, {\"@type\": \"Question\", \"name\": \"Is this drain cap easy to install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The threaded design allows for simple hand-tightening — no special tools or plumbing experience required. Just remove the old or damaged cap, clean the threads on your filter, and thread this replacement cap in securely for an instant, watertight fit.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Pool Filter Drain Cap with Sealing Gasket – Leak-Proof Plug\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/products\/pool-filter-drain-cap-sealing-gasket-leak-proof-plug\"}]}\u003c\/script\u003e","brand":"Zpaxo","offers":[{"title":"black","offer_id":54272649003318,"sku":"14:193#black","price":18.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/7774\/3158\/files\/Sffca98fedab64450af31173e125984fcT.webp?v=1784768302","url":"https:\/\/zpaxo.com\/products\/pool-filter-drain-cap-sealing-gasket-leak-proof-plug","provider":"Zpaxo","version":"1.0","type":"link"}