Food Grade Silicone Sealing Ring – Leak-Proof Cup Gasket
Food Grade Silicone Sealing Ring – Leak-Proof Cup Gasket
Food Grade Silicone Sealing Ring – Leak-Proof Cup Gasket
Keep your drinks exactly where they belong — inside your cup. This food grade silicone sealing ring is designed to create a tight, leak-proof seal for water cups, insulated tumblers, thermos lids, and more. Made from high-quality, food-safe silicone, it withstands high temperatures while remaining flexible enough to fit a variety of cup sizes.
Key Features
- Food Grade Silicone Material: Safe, non-toxic, and free from harmful chemicals — ideal for use with drinking vessels.
- High Temperature Resistance: Maintains its shape and seal integrity even in hot and cold conditions.
- Flexible Fit: The elastic nature of the silicone means rings with a slightly smaller outer or inner diameter can still be used effectively. Rings with a slightly larger outer diameter can be trimmed to fit.
- 2mm Thickness: A slim, precise profile that slots neatly into standard cup lid grooves without adding bulk.
- Multi-Purpose Sealing: Suitable for water seals, dust seals, and fixed seals on cups, flasks, and insulated bottles.
- Easy to Install & Replace: Simply press into place for an instant, secure seal. No tools required.
Specifications
- Material: Food Grade Silicone
- Thickness: 2mm
- High-Concern Chemicals: None
- Uses: Water Seal, Dust Seal, Fixed Seal
- Made in: Mainland China
Sizing Tips
If the outer diameter and inner diameter are slightly smaller than your cup's groove, the ring's elasticity will still allow it to seal effectively. If the outer diameter is slightly larger but the inner diameter matches, you can trim the ring slightly for a perfect fit. For custom sizes, please contact us directly.
Package Includes
- 1x Food Grade Silicone Sealing Ring
Note: Actual color may vary slightly from images due to monitor brightness and display settings. Please allow a slight measurement deviation of ±1mm.
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Learn more: Nutrition.gov on cooking and food safety
Frequently Asked Questions
Q: What sizes of silicone sealing rings are available, and how do I choose the right one?
A: The sealing rings come in various sizes as shown in the product images. Because food grade silicone is elastic, a ring with a slightly smaller outer or inner diameter than your cup groove can still form a secure seal. If the outer diameter is slightly larger, you can carefully trim the ring for a precise fit. For sizes not listed, please contact us and we'll be happy to help.
Q: Is this silicone sealing ring safe for use with hot beverages?
A: Yes! The ring is made from food grade silicone that is high-temperature resistant, making it suitable for use with hot drinks, insulated tumblers, and thermos-style cups. It contains no high-concern chemicals and is designed to maintain its shape and sealing performance over repeated use.
Q: Can this gasket be used for cups other than water cups?
A: Absolutely. This versatile silicone gasket works as a water seal, dust seal, and fixed seal. It is compatible with a wide range of cup types including insulated mugs, travel tumblers, thermos flasks, and standard lid-and-cup sets — making it a handy replacement part to keep on hand.