Silicone Bottle Stopper Heat-Resistant Kettle Plug Flask Cap

ROSENICE Silicone Bottle Stopper – Heat-Resistant, Tasteless & Long-Lasting

Keep your hot water bottle, vacuum flask, or water jug sealed tight with this premium silicone bottle stopper by ROSENICE. Crafted from food-grade silicone, this replacement kettle plug is engineered to be heat-resistant, odour-free, and built to last — making it the perfect everyday household essential.

Why You'll Love It

• Heat-Resistant Silicone: Handles boiling water with ease, maintaining a secure, airtight seal without warping or degrading over time.
• Tasteless & Odour-Free: Made from high-quality silicone with no peculiar smell — your water stays fresh and clean-tasting.
• Anti-Aging Material: High-density silicone construction resists wear and tear, so it won't crack, harden, or break with regular use.
• Soft & Bottle-Friendly: The supple, flexible material is gentle on bottle mouths, preventing scratches or damage during insertion and removal.
• Threaded Sealing Design: The precision thread pattern creates maximum contact with the bottle mouth, delivering an excellent insulation-preserving seal.
• Universal Fit: Sized at 4.80 × 4.80 × 3.90 cm (1.89 × 1.89 × 1.53 in) to fit most standard hot water bottles, vacuum flasks, and water jugs.
• Simple to Use: No complex steps — just insert and twist. Effortless replacement for worn-out or missing bottle caps.
• Elegant & Practical: Clean white finish with a neat, simple shape that looks great and works even better.

Specifications

• Brand: ROSENICE
• Material: Silicone
• Colour: White
• Dimensions: 4.80 × 4.80 × 3.90 cm / 1.89 × 1.89 × 1.53 in
• Country of Origin: Made in China
• Package Contents: 1 × Silicone Bottle Stopper

Compatible With

• Hot water bottles
• Vacuum flasks & thermos bottles
• Water jugs & kettles
• Most standard household beverage containers

Looking for more handy kitchen and household accessories? Check out our SWANS Silicone Cooking Spoon – Non-Stick Heat-Resistant and our Thermal Oven Glove & Mat Set – Anti-Slip Cotton Kitchen Mitts for more heat-safe silicone essentials for your home.

Learn more: FDA food safety in the kitchen

Frequently Asked Questions

Q: What size bottles does this silicone bottle stopper fit?

A: The stopper measures 4.80 × 4.80 × 3.90 cm (1.89 × 1.89 × 1.53 in) and is designed to fit most standard hot water bottles, vacuum flasks, and water jugs. Its flexible silicone construction also allows it to conform snugly to slight variations in bottle mouth diameter.

Q: Is this kettle plug safe for use with boiling water?

A: Yes. This stopper is made from heat-resistant silicone, making it fully safe for use with boiling water and very hot liquids. It will not warp, melt, or release any odour when exposed to high temperatures.

Q: Will the silicone stopper damage my bottle's mouth?

A: No. The stopper's soft, supple silicone material is gentle on bottle openings. Unlike hard plastic caps, it conforms to the bottle mouth without scratching or damaging the surface, while still maintaining a secure, heat-preserving seal.

Q: How easy is it to replace my old stopper with this one?

A: Very easy! Simply insert the stopper into the bottle mouth and press or twist gently into place. No tools or complicated steps are required — it's a straightforward, hassle-free replacement process.

Production & Packaging Notice

To 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.