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Item #:
210403965
12 Pcs Replacement Leak Stopper Compatible with Thermos Funtainer 16oz Stainless Steel Bottle, Silicone Lid Gaskets and Straw Seals for Water Bottle
Item #:
210403965
GBP 14
Price Details
Price
GBP 14
Excluding Shipping, VAT & Custom charges ( Shipping, VAT and custom charges will be calculated on checkout.
If Item price + shipping is below GBP 135, 20% VAT will be calculated on checkout, if it is equal or above GBP 135, no VAT will be charged. )
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In stock
Imported from USA store
QTY:
Only 6 items left in stock.
Excluding VAT : VAT will be calculated on the checkout page
Order now and get it around Saturday, August 15
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Don’t replace the entire expensive bottle! Our replacement seals quickly restore the original leak-proof function.
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What Stands Out
Complete Replacement Set
Includes 12 essential parts, ensuring you have all necessary gaskets and seals to keep your Thermos Funtainer leak-proof and fully functional.
High-Quality Silicone
Made from durable silicone, these replacement parts provide excellent flexibility and long-lasting use, ensuring your bottles stay in optimal condition.
Perfect Compatibility
Specifically designed for the Thermos Funtainer 16oz bottles, guaranteeing a snug fit and reliable performance, solving common leakage issues faced by users.
Product Details
- Stop Leaks for Good: These premium silicone Leak Stopper create a perfect airtight seal for both the lid and straw port of your bottle. Effectively prevents messy leaks and spills in water bottle, Maintain water temperature as much as possible
- Perfect Fit Guarantee: Precisely engineered to be compatible with Thermos Funtainer 16oz drink bottles. (Please compare with your original seals for size confirmation before installation). Easy to install—just replace the old, worn-out seals.
- Safe & Durable Material: These water bottle replacement parts made from 100% food-grade, BPA-free silicone. Flexible, odorless, tasteless, and resistant to deformation, ensuring long-lasting performance and Keep water temperature.
- Restore Like New Performance: Don’t replace the entire expensive bottle! Our replacement seals quickly restore the original leak-proof function. Ideal for fixing lids that have become loose or straw ports that no longer seal tightly.
- Great Value Pack of 6: Package Includes 6 sets seals (for both Lid Gasket and Straw Seal). Have spares on hand for multiple Bottles or for future replacement, making it a cost-effective solution for parents.
Product Technical Details
| Item Package Dimensions L x W x H | 2.67 x 2.04 x 2 inches |
| Package Weight | 0.03 Kilograms |
| Brand Name | Dollform |
| Warranty Description | 3-month warranty |
| Model Name | Leak Stopper |
| Color | Clear |
| Material | Food-grade Silicone |
| Suggested Users | unisex |
| Number of Items | 6 |
| Manufacturer | Dollform |
| Included Components | 6 Pack Water Bottle Lid Gaskets Replacement, 6 Pack Water Bottle Straw Seals Replacement |
What's in the box
6 Pack Water Bottle Lid Gaskets Replacement
6 Pack Water Bottle Straw Seals Replacement
Who Should Buy?
-
Parents with Kids
Ideal for parents needing reliable replacement parts for kids' Thermos Funtainers, ensuring no leaks during school or outings.
-
Active Lifestyle Users
Perfect for individuals who travel or participate in sports, maintaining hydration without the worry of spills or leaks.
-
Eco-Conscious Consumers
Beneficial for those seeking to extend the life of their bottle, reducing waste and promoting sustainability through reuse.
-
Non-Thermos Users
Not suitable for users with other brands of bottles, as compatibility is limited to Thermos Funtainer models only.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What size bottles are these seals compatible with?
Answer: These seals are designed specifically for 16oz Thermos Funtainer drink bottles. -
Question:
Are the replacement seals easy to install?
Answer: Yes, simply remove the old seals and press the new ones into place for quick installation. -
Question:
How many seals are included in the kit?
Answer: The kit includes 6 sets of replacement seals, enough for multiple bottles or future needs.
Dollform Sports Water Bottle Accessories Editorial Review
The 12 Pcs Replacement Leak Stopper Set for Thermos Funtainer water bottles has received a mixed reception from customers, highlighting both positive outcomes and some notable concerns. Many users have praised the gaskets for their ability to fit snugly and create an effective seal, eliminating leaks and allowing users to continue using their existing Thermos bottles, which is particularly advantageous for daily use by children. The quality of materials has also been commendably mentioned, with several reviewers noting that the replacements perform similarly to, if not better than, the original parts. However, not all feedback has been favorable. Some customers reported that the replacements did not fit perfectly, leading to issues with sealing and resulting in leaks. This discrepancy appears to stem from variations in bottle styles that were not adequately accounted for in the product description. Additionally, concerns regarding the hygiene of the parts upon delivery were raised, as some customers noted that the items arrived crammed in a box without individual packaging, attracting dirt and dust. Overall, while a good number of users have found success with these replacements, potential buyers should be cautious about compatibility with their specific Thermos models and might wish to examine any cleanliness issues upon receipt. **
Customer Reviews & Ratings
24 customers ratings
-
5 Star
48%
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4 Star
24%
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3 Star
6%
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2 Star
8%
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1 Star
14%
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Pros
- Effective sealing capability with no leaks.
- Good quality materials akin to original parts.
- Economical solution, as users get multiple replacements.
Cons
- Concerns about the sanitary condition upon delivery.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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GBP 14
Excluding VAT : VAT will be calculated on the checkout page
Order now and get it around Saturday, August 15
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 6 items left in stock.
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- End leaky lunches with our Complete Seal Replacement Kit.
- Includes seals for both lid and straw hole to stop leaks effectively.
- Crafted from high-performance, food-grade, BPA-free silicone.
- Simple DIY installation saves you money on new bottles.
- Value-packed kit comes with 6 durable seals for multiple uses.
- Perfect Fit Guarantee for Thermos Funtainer 16oz models.
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