foto: YouTube/Gio Kabayan

A practical solution to overcome stainless steel thermoses that leak and cannot maintain hot temperatures.

  25 Maret 2025 15:00

Brilio.net - You must have often seen stainless thermoses with a slim design that is practical to carry around. This thermos can be filled with hot water, tea , or coffee to accompany your daily activities.

However, the problem that often arises is a stainless steel thermos that leaks and cannot keep the water temperature hot. This leak is often caused by a loose lid or the presence of scale inside.

Well, if your thermos is experiencing this problem, there is an easy way to fix it. You can follow the guide from Gio Kabayan's YouTube video explaining the steps to repair a stainless steel thermos so that it functions properly again.

Causes of leaking stainless steel thermoses

Reported from Gio Kabayan's YouTube video, leaks in thermoses usually occur because the lid is loose. When the pump on the lid is not locked properly, water can leak out, especially when the thermos is tilted or upside down.

How to fix a leaking stainless steel thermos (Eid stock)  YouTube

photo: YouTube/Gio Kabayan

In addition, the crust that builds up inside the thermos lid can also cause leaks and make the thermos unable to retain heat optimally.

How to fix a leaking stainless steel thermos

1. Check and remove the thermos lid

- Remove the thermos lid and check the bottom.
- Usually there is a clear rubber seal and a round rotary button in this section.

How to fix a leaking stainless steel thermos (Eid stock)  YouTube

photo: YouTube/Gio Kabayan

2. Fix the lid position

- Remove the rubber seal and turn the button on the lid.
- If the rotation is not right, leakage can occur. So, keep turning while pressing the thermos pump until it feels tighter.

How to fix a leaking stainless steel thermos (Eid stock)  YouTube

photo: YouTube/Gio Kabayan

3. Clean the thermos lid from scale.

- Soak the lid of the thermos in boiling hot water.
- This process will soften the crust and dirt that sticks inside the thermos lid machine so that it is easy to clean.

How to fix a leaking stainless steel thermos (Eid stock)  YouTube

photo: YouTube/Gio Kabayan

4. Reinstall the rubber seal

- After the thermos lid is clean, replace the rubber seal in place.
- Press the thermos pump to ensure there are no leaks.

If after this step the water no longer leaks when the thermos is turned upside down, it means your thermos is working properly again.

How to fix a leaking stainless steel thermos (Eid stock)  YouTube

photo: YouTube/Gio Kabayan

FAQ about stainless steel thermoses and their care

1. Why can't a stainless steel thermos keep the water hot?

Stainless thermoses can lose their ability to retain heat due to air leaks in their vacuum walls. In addition, loose or dirty thermos lids can also cause the water temperature to drop quickly.

2. How to clean a stainless steel thermos so it doesn't smell?

To remove bad odors, fill the thermos with a mixture of warm water and vinegar or baking soda. Let it sit for a few hours, then rinse thoroughly. Do not use detergents that are too strong because they can damage the inner lining of the thermos.

3. Can you repair a stainless steel thermos that has fallen and become dented?

If the thermos is dented but not leaking, you can still use it. However, if the inside is damaged or the vacuum wall is broken, the thermos is usually beyond repair and must be replaced.

4. What are the main causes of stainless steel thermoses leaking?

Leaks in thermoses can occur due to loose lids, worn or dirty rubber seals, and crust that builds up on the inside of the lid mechanism. In addition, if the thermos is often dropped or hit, it is possible that damage has occurred to the walls.

5. How do you store a thermos so that it lasts and doesn't get damaged quickly?

Store the thermos in a dry and open condition after washing to prevent mold. Avoid dropping or pressing the thermos too hard. Also, do not fill the thermos with carbonated drinks or milk, as they can leave residue that is difficult to clean.

(brl/tin)

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