{"product_id":"silicone-o-ring-gaskets-vacuum-flask-lid-replacement-4-5cm-5-2cm","title":"5-Pack Silicone O-Ring Gaskets for Vacuum Flask Lids | 4.5 \u0026 5.2cm","description":"\n\u003ch2\u003eKeep Your Drinks Sealed \u0026amp; Leak-Free\u003c\/h2\u003e\n\u003cp\u003eSay goodbye to drips and spills! These \u003cstrong\u003efood-safe silicone O-ring gaskets\u003c\/strong\u003e are the perfect replacement seals for your vacuum flask, travel mug, or insulated cup lid. Whether your old gasket has cracked, stretched, or lost its grip, this 5-pack gives you everything you need to restore a like-new, airtight seal — no tools, no hassle.\u003c\/p\u003e\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Premium food-safe silicone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Lid Outer Diameters:\u003c\/strong\u003e 4.5 cm and 5.2 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 5 × Silicone O-Ring Gaskets\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eBPA-Free | Phthalate-Free | Latex-Free\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy You'll Love These Gaskets\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHigh-Quality Silicone:\u003c\/strong\u003e Durable, flexible, and odor-resistant — built to last through repeated use and washing cycles.\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFood Safe:\u003c\/strong\u003e Made from BPA-free, phthalate-free, and latex-free silicone so you can drink with complete confidence.\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eTool-Free Installation:\u003c\/strong\u003e Simply roll off the old gasket and snap the new one into place in seconds — no special equipment needed.\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePerfect Airtight Seal:\u003c\/strong\u003e Restores a snug, leak-proof fit to keep your hot drinks hot and your cold drinks cold.\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eGreat Value 5-Pack:\u003c\/strong\u003e Stock up and keep spares on hand for multiple cups or for gifting to fellow flask lovers.\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Fits vacuum flask and insulated cup lids with an outer diameter of 4.5 cm or 5.2 cm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Replace Your Gasket\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eRemove the lid from your vacuum flask or insulated cup.\u003c\/li\u003e\n  \u003cli\u003eLocate the old O-ring gasket seated in the groove of the lid.\u003c\/li\u003e\n  \u003cli\u003eRoll or pull the old gasket off carefully.\u003c\/li\u003e\n  \u003cli\u003eStretch the new silicone O-ring over the rim and seat it firmly in the groove.\u003c\/li\u003e\n  \u003cli\u003eReattach the lid and enjoy a perfect, leak-free seal!\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eCompatibility Note\u003c\/h3\u003e\n\u003cp\u003eThese gaskets are designed for insulated cup lids with an \u003cstrong\u003eouter diameter of 4.5 cm or 5.2 cm\u003c\/strong\u003e. We recommend measuring your lid before purchasing. Sizes are hand-measured; minor variations of 1–2 mm may occur. Product color may appear slightly different on screen due to monitor calibration.\u003c\/p\u003e\n\n\u003cp\u003eFor more guidance on food-safe materials and drinkware safety standards, visit the FDA's food safety resources.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes do these silicone O-ring gaskets fit?\u003c\/h4\u003e\n\u003cp\u003eA: These replacement gaskets are designed to fit vacuum flask and insulated cup lids with an outer diameter of \u003cstrong\u003e4.5 cm or 5.2 cm\u003c\/strong\u003e. Please measure the outer diameter of your lid before ordering to ensure a proper fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these O-rings safe to use with hot beverages?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The gaskets are made from \u003cstrong\u003efood-safe, BPA-free silicone\u003c\/strong\u003e that is heat-resistant and safe for contact with both hot and cold beverages. Silicone is widely recognized as a safe material for food and drink applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many gaskets come in the package?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes \u003cstrong\u003e5 silicone O-ring gaskets\u003c\/strong\u003e, giving you plenty of spares for multiple cups or future replacements.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need any tools to install these gaskets?\u003c\/h4\u003e\n\u003cp\u003eA: No tools are needed. Simply roll off the old gasket and pull the new silicone O-ring into the groove on your lid — it's quick and easy to do by hand.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can these gaskets be washed in the dishwasher?\u003c\/h4\u003e\n\u003cp\u003eA: These silicone gaskets are durable and easy to clean. Hand washing with warm soapy water is recommended to extend the life of the gaskets and maintain their elasticity. Always check the care instructions for your specific flask or cup.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes do these silicone O-ring gaskets fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These replacement gaskets are designed to fit vacuum flask and insulated cup lids with an outer diameter of 4.5 cm or 5.2 cm. Please measure the outer diameter of your lid before ordering to ensure a proper fit.\"}}, {\"@type\": \"Question\", \"name\": \"Are these O-rings safe to use with hot beverages?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The gaskets are made from food-safe, BPA-free silicone that is heat-resistant and safe for contact with both hot and cold beverages. 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