Can A Thermos Explode?

Can A Thermos Explode?

Thermos flasks are incredible inventions that we don’t really appreciate until we need to have our drinks on the go or to store food for a long time. Thanks to a layer vacuum, thermos flasks can keep hot drinks hot for about four to six hours, and frozen drinks can stay that way for up to 24 hours.

However, although thermoses are simple, they can also be dangerous if you don’t use them properly. You could suffer spillages, leaks, or worse when they are not handled carefully.

This is why many consumers keep wondering if their thermos can explode unexpectedly. Unfortunately, these explosions happen, and they do pretty often. So, should you be worried that your thermos can explode at any time? Well, not really. This article will clear the air and set things straight.

Can a Thermos Flask Explode?

Yes, a thermos flask can explode. However, it is not guaranteed to happen to everyone. There are two main reasons a thermos can explode or implode:

  • It can be caused by pressure building up inside the flask,
  • Or if the flask’s internal layer is damaged.

Either way, both scenarios are dangerous enough to cause serious injuries. However, while cold drinks may cause no more than a spill, hot drinks might be a different story.

Why Do Thermos Flasks Explode?

One recurring reason why thermos flasks explode is when food or drink is stored for a long time. When this happens, bacteria start to grow. These bacteria produce gas as they grow. So, with gas being emitted in a sealed flask, pressure is bound to build up.

The longer gas is produced in the sealed container, the higher the chances are that the lid and the contents of the flask will explode when you open it.

Why Do Thermos Flasks Implode?

When a thermos flask implodes, it’s most likely because its internal structure is compromised. These flasks are excellent insulators because they are usually designed with double glass walls or a gap of air that serves as a vacuum. This vacuum keeps contents hot or cold for a long time because there’s no way for the temperature to escape.

However, thermos flasks are pretty fragile because of their design. They are quite delicate and can break if you accidentally drop them onto a hard surface. As a matter of fact, hitting it, or even just stirring a bit too hard with a spoon can crack the glass. The glass will eventually break because of air and vacuum pressure. So, when a flask implodes, the liquid contents fill the vacuum because the glass barrier is broken.

Thankfully, you don’t need to worry about your thermos imploding if it’s stainless steel.

Can You Tell If a Thermos is About To Explode?

Yes, you can. You have to look out for some telling signs. For example, if your thermos’ lid feels unusually tight, there’s pressure built up inside the flask. If this is the case, the safest thing to do is to gently try to twist the lid open without pointing it at yourself or anyone else. The pressure can shoot the top off in a fast projectile. Customers have reported different kinds of domestic accidents caused by an exploding thermos.

Also, if you don’t feel safe check the lid for pressure, the next best thing is to figure out the last contents of the flask and how long it’s been sealed in the container.

Can Boiling Water Make a Thermos to Explode?

Well, there’s no straightforward answer to this question. It all depends on the design of the flask. You will need to be careful with thermoses that have glass lining because the sudden rise in temperature could make them shatter. However, stainless steel thermoses can handle boiling water just fine. The water can stay hot for up to 12 hours.

Is a Glass-Lined Thermos Safer Than a Stainless One?

No, it isn’t. A thermos made with last is more likely to get damaged faster than a stainless steel one. This is because stainless steel is more durable than glass and can better hold hot and cold liquids. So if you accidentally drop it, the most damage you could end up with might be a dent. However, a glass thermos will crack or break.

However, in terms of explosions, both types of thermoses can be exposed to situations that can cause pressure to accumulate to an extreme level.

Will a Vacuum Flask Work If The Inner Vessel Is Cracked?

No, the thermos won’t work effectively. You need to maintain a vacuum so that the temperature is maintained. Once air gets into the container, heat can be conducted to the outer body of the flask. So, you need the flask to be in one piece to get the most out of it. Otherwise, your food will get cold quicker than you’d like, and your frozen drinks will turn warmer before you enjoy them.

One of the best things to do is to ensure that you don’t carelessly drop the flask or handle it poorly. Alternatively, since only glass thermoses are at a higher risk of cracking, you can switch to one made from stainless steel. Stainless steel thermos flasks have two layers of stainless that don’t break or crack if you drop them by accident.

Can Cold Drinks Make a Thermos To Explode?

As we mentioned earlier, a pressure build-up is why a thermos could explode. This means that you can conveniently keep a cold drink in your thermos without any problem. However, it depends on whether the liquid is like a carbonated drink or others that could cause gas to gather within the small space in your thermos.

Nonetheless, it is unlikely that you could suffer an explosion from a flask containing cold liquids. It may pop like a fizzy bottle of soda, but it won’t cause any severe damage. Still, it is wise to be careful under such circumstances to avoid serious spillage.

Can You Repair a Thermos That Has Exploded?

This depends on the type of flask you own. It would be impossible to fix if it’s a glass thermos that explodes. Once you lose the vacuum, you can do nothing about it. However, it may be possible to find a thermos glass liner replacement that fits the model you’re using. However, you may be able to replace other parts of the flask, including its lid.

Final Remarks

So, can a thermos explode? The simple answer to that question is a resounding yes. Thermos flasks explode, and they can do so unexpectedly. Thankfully, these ‘explosions’ are not always random or dangerous.

We hope that this article has all the answers you may have about thermoses exploding. We have also provided other useful information to help you avoid such incidences and answered other related questions you might have. Thankfully, everything is pretty straightforward, so you’ll need to follow our guide carefully.

Thermoses are great! There’s no reason you should be afraid of using one because of some danger. However, if you still have any safety concerns, your best option would be to use a stainless thermos flask. They are more durable and reliable.

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