{"product_id":"danco-5-8-in-d-x-15-32-in-d-21-rubber-o-ring-20-pk","title":"Danco 5\/8 in. D X 15\/32 in. D #21 Rubber O-Ring 20 pk","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Danco 5\/8 in. D x 15\/32 in. D #21 Rubber O-Ring (20 pack) — a precise, reliable seal designed to restore drip-free performance in a variety of plumbing connections. This rubber O-ring-friendly kit keeps your fixtures watertight, helping you avoid messy leaks and wasted water.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eInterior Diameter: 15\/32 in\u003c\/li\u003e \u003cli\u003eExterior Diameter: 5\/8 in\u003c\/li\u003e \u003cli\u003eWall Thickness: 0.047 in\u003c\/li\u003e \u003cli\u003eMaterial: Rubber\u003c\/li\u003e \u003cli\u003eShape: Round\u003c\/li\u003e \u003cli\u003eProduct Type: O-Ring\u003c\/li\u003e \u003cli\u003eSize designation: #21\u003c\/li\u003e \u003cli\u003eQuantity: 20 per package\u003c\/li\u003e \u003cli\u003ePackaging Type: Polybag\u003c\/li\u003e \u003cli\u003eBrand Compatibility: Fits American Standard, Aqua Seal, Cole\u003c\/li\u003e \u003cli\u003eBrand Name: Danco\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this O-ring matters\u003c\/h3\u003e\n\u003cp\u003eO-rings are the frontline defense against leaks in many fixtures and fittings. The #21 size (5\/8\" outer diameter, 15\/32\" inner diameter) is a common fit for countless connections, and the 0.047\" wall thickness provides a dependable seal under typical water pressure. With a 20-pack, you’ll have ready-to-use replacements on hand for quick repairs, preventing downtime and repeated trips to the hardware store.\u003c\/p\u003e \u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDIY homeowners performing routine faucet, valve, or connection maintenance\u003c\/li\u003e \u003cli\u003ePlumbers stocking spare parts for standard-use fixtures\u003c\/li\u003e \u003cli\u003eEmergency kits for leak prevention and immediate resealing tasks\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing worn seals in common household fixtures that require a #21 O-ring to restore a tight seal\u003c\/li\u003e \u003cli\u003eSealing supply lines and small valve connections where a 5\/8\" outer diameter is specified\u003c\/li\u003e \u003cli\u003eHaving a ready supply of universal-size O-rings to tackle unexpected leaks during maintenance\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the mating surfaces are clean and free of debris before installation for an effective seal\u003c\/li\u003e \u003cli\u003eLubricate the O-ring lightly with a compatible lubricant to ease seating and extend life\u003c\/li\u003e \u003cli\u003eReplace the O-ring if it shows signs of cracking, nicking, or hardening to prevent future leaks\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eValue you can trust\u003c\/h3\u003e\n\u003cp\u003eFrom Danco’s dependable lineup, this 20-pack of #21 rubber O-rings delivers consistency in size and material. It’s designed to fit widely used fixtures from American Standard, Aqua Seal, and Cole, making it a practical choice for ongoing maintenance and peak-season repairs alike. Keep a stock on hand and tackle leaks quickly without guessing the right size.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Danco","offers":[{"title":"Default Title","offer_id":52190481776914,"sku":"4138483","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/4138483_A.eps_High.jpg?v=1775854703","url":"https:\/\/nationalhardwaregroup.com\/products\/danco-5-8-in-d-x-15-32-in-d-21-rubber-o-ring-20-pk","provider":"National Hardware Group","version":"1.0","type":"link"}