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Rang Dong’s 1-liter vacuum flask fit for keeping warm water all day

October 2nd, 2023

Warm water is used mostly for making coffee, tea and baby’s milk. Drinking pure warm water also has many health benefits. Therefore, choosing a Rang Dong’s vacuum flask to keep warm water for the whole day and avoid reheating many times is a great choice. Rang Dong 1 liter vacuum flask 1040 MC should be your first option due to its full advantage functions.


Rang Dong has recently invented a vacuum flask, the 1-liter model 1040MC, with full outstanding functions that meet customer demand. Its capacity is quite suitable for keeping warm water for the whole day. The elegant design, with a polishing stainless steel body, helps the flask avoid dust accumulation and make it easy to clean.


Rang Dong’s 1040 MC vacuum flask has an elegant design and advantage functions.

The flask bottom is made from TPE plastic with a calculated weight that keeps the vacuum flask standing stably and being insulated against the table surface. The top is designed to have a non-leaking system that keeps the water inside even when the flask falls or turns upside down, making it safe for the user.

The glass refill is made from neutral glass, which is safe for food, and plated with silver using absolute heat radiation technology to retain the drink temperature for a long period. The vacuum layer between its glass refill and the cover helps keep the high temperature inside, while the outside is not hot, which is safe for users and kids in particular. A handle on the side makes it easy to grip and lug around.

The flask is capable of keeping for up to 24 hours.

With over 60 years of experience, Hanoi-based Rang Dong guarantees that the 1040 MC vacuum flask can retain the temperature at over 78 degrees Celsius after six hours and keep warm water all over 24 hours. That helps save time and energy as warm water is ready all day long.

Exceptional features

Usually, when adding hot water suddenly into the vacuum flask, the glass refill will be shocked and likely to break. Rang Dong has conducted research on this issue and made sure that its 1040 MC flask meet the requirements of thermal shock resistance before release.

Rang Dong’s flask can stand stably on any surface.

The flask is also tested for the ability of withstanding external impact. At the room temperature, the tester fills water into a vacuum flask to its full capacity, then drops vertically from a height of 10 cm onto a horizontal hardwood panel with the minimum thickness of 3 cm. The result shows that the 1040 MC model passes the test without being broken.

How to use the tea flask?

User’s guide

Please make sure that the flask is washed by the washing liquid before the first-time use and continually rinsed with warm water for safety and hygiene function. It is also needed for the flask’s conditioning purposes.

After filling with hot water, please make sure that the inside lid is properly closed.

To remove the scale inside the flask, add one teaspoon of bicarbonate of soda, then soak overnight. Before reuse, make sure to repeatedly rinse with warm water.

Keep out of the reach of children and avoid drops from high places.

Should you have any questions, wish to share your ideas about vacuum flasks or request a quotation, please send us an email to: export@rangdong.com.vn.

Our website: vacuumflask.rangdong.com.vn


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