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Rang Dong's latest vacuum flasks best in keeping heat for our day

October 2nd, 2023

Besides being useful for storing tea or coffee, vacuum flasks can also be our best assistant for keeping warm, pure water for the whole the day. The latest two models, capable of holding 1 liter and 1.3 liters, should be our first option thanks to their advantages. Let's take a closer look at these products.


The two vacuum flasks, the 1-liter model RD-1040 ST1.E and the 1.3-liter RD.1340ST1.E, are brand-new inventions from Vietnam's Rang Dong, having all the features needed by customers. These vacuum flasks have an elegant, easy-to-clean form that helps prevent dust accumulation on their body of polished stainless steel. 

Samples of the model of the vacuum flask, Rang Dong's latest invention - RD-1040 ST1.E.

  • Capacity: 1 liter and 1.3-liter
  • Heat retention after 6 hours: 80˚C
  • Material: Iron Body
  • Refill: Glass
  • Gasket: Silicone

These vacuum flasks stand steadily and insulate well from the table surface thanks to the TPE plastic that makes up the product's weighted bottom. The non-leaking technology that keeps the water inside even if the vacuum flask falls or is turned upside down creates the top, keeping the user safe.

Exceptional features 

In order to maintain the drink's temperature for a long time, the glass refill is constructed from neutral glass, a substance proven to be safe for food, and is silver-plated. The vacuum layer that exists between the glass refill and the cover helps keep the water hot inside but not outside, thus ensuring safety for users and children. It is simple to carry and grip thanks to the side handle.

Rang Dong, which has more than 60 years of experience in making vacuum flasks, guarantees that these two vacuum flask models can store warm water for 24 hours, and keep heat above 78 degrees Celsius for six hours.

Sample of the model of the vacuum flask - RD-1340ST1.E.


Guideline to use

For safety and hygienic purposes, please ensure the flask is cleaned with washing liquid before use and regularly rinsed with warm water. Moreover, it is required for flask conditioning.

Please make sure the inside lid is closed correctly after adding hot water.

Add one teaspoon of bicarbonate of soda and soak the flask overnight to dissolve the scale. Make sure to thoroughly rinse with warm water before reuse.

Keep the flasks out of children's reach and up right to prevent falling.


This item is perfect for storing hot or cold tea. While it is ideal for any trips, it also fits nicely with any room type, especially the living room and conference room since its attractive design is appropriate for tabletop display.

Should you have any questions or request a quotation of Rang Dong products, please send us an email to: export@rangdong.com.vn.

Websites: en.rangdong.com.vn and vacuumflask.rangdong.com.vn.

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