Last updated: August 19, 2021

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Food preservation is vital in the home, as food loss is not only a pity, but a blow to the pocketbook. For this reason it is good to have an efficient preservation system, such as vacuum sealing, and you can do this effectively with a bag sealer.

Oxygen is one of the main factors contributing to food spoilage and decomposition, so it is important to avoid having it present in the bags at the time of storage, as it will accelerate the oxidation process. Because of this, the use of a bag sealer can be essential in a kitchen.

Because it is a practical but not very popular product, you may not have a clear idea of how it works and what to consider when buying it. If this is your case, you don't have to worry, because through this article, you will learn everything about this product.


  • Bag sealers are machines that, by means of press, temperature or a mixture of both, join the ends of a plastic bag or other material together to create a vacuum-tight seal to protect the products inside.
  • The current market for bag sealing machines provides a wide variety of models, presentations and designs that can be somewhat confusing for the buyer, but these can be associated in two main types: heat sealers and suction sealers.
  • When buying one of these machines, it is necessary to take into account several factors that will help you compare, such as the shelf life of the food, the size of the bag, the frequency of use and the material of the bags you want to seal.

The Best Bag Sealers: Our Picks

Buying Guide

After seeing the ranking above, you may have a clearer idea about this product and its features, and maybe you already have a model in mind that you are interested in buying. However, before you make your decision, it is important that you know certain aspects about this product.

In places where you are constantly working with packaging, there are larger sealers. (Photo: Tyler Olson/

A bag sealer is nothing more than a machine with a surface that functions as a press, which, by means of heat, pressure or a combination of both, joins two ends of a bag together, leaving it hermetically sealed, thus preventing spoilage of the contents.

Among its benefits are the prevention of oxygen ingress and fridge burns, and its size is not a big problem when it comes to storage. Resealing is also an effective way to recycle the original product packaging.

Even though it seems like the perfect product, the truth is that, like everything else on the market, it has advantages and disadvantages, which you should be aware of so that you can be sure about what you are buying. This does not mean that it is defective, but there are details that you should keep in mind to avoid surprises.

  • Easy storage
  • Food preservation
  • Recycling of wrappers
  • Practical and quick to use.
  • Can be heavy
  • Some can be a bit expensive
  • Not all can withstand multiple materials
  • Some require a specific type of bag.

Heat or suction bag sealer - what to look out for?

There are multiple variants of bag sealers that will give you a variety of options to choose from, but all of these variants can be divided into two main strands: Thermal Bag Sealer and Suction Bag Sealer

Thermal bag sealer: This type of sealer is the most common, found in the market with a mechanism similar to a dam or guillotine, its function is limited to only heat and seal the ends of the bag located in the press and the metal surface.

This sealer does not have suction capacity, thus leaving air inside the bag, which reduces its conservation capacity. Its durability is high, as spare parts are inexpensive and its service life is very long. Thanks to its heat meter it can seal multiple types of bag materials.

Suction bag sealer: As the name suggests, these sealers have the additional power of suction, which removes the air inside the bag providing a vacuum hermetic seal, this being a better preservation for food.

But while the suction is a fantastic addition to the machines, it is also their weakness, as their durability is reduced due to the loss of suction power. Its parts need to be changed more frequently, and although it also has a heat seal, it requires a specific type of bag for its use without damaging the sealer.

- Heat sealer Suction sealer
Suction capacity No Yes
Food preservation Medium High
Durability High Medium
Additional requirements No Unique and specific bag type.

Buying criteria: factors that allow you to compare and rate different models of pouch sealers

After all you have read about this product, you should feel ready to buy a bag sealer. However, before you make your final decision, you should be aware of certain factors that will help you make comparisons.

  • Shelf life
  • Size
  • frequency
  • Material

Shelf life

Depending on the shelf life of the food, there are types of sealers that will suit you better than others, as there are foods that have a shorter shelf life than others, and there are sealers that may or may not increase the shelf life.

Foods with a long shelf life: Foods such as red meat, white meat, fruit and vegetables, which have a relatively short shelf life, it is preferable to opt for a suction bag sealer, as it eliminates air and the food stays fresh for longer.

Short term food: Cereals, biscuits, flour and products that require daily opening and closing of the seal, it is not so necessary the issue of air suction, because they are products of high turnover and are exhausted quickly. A thermal or portable sealer will be your best option in this case.

A good technique for preserving meats, fruits and vegetables is vacuum preservation by sucking the air out of the bag. (Photo: Yongyut Khasawong/


According to the food to be sealed, especially its size, the appropriate dimensions of the sealing machine will be determined. The larger the size of the objects to be stored, the larger the machine should be.

Small bags: If you are going to pack in small bags, maximum 30cm long, a common thermal or suction sealer are your best options as they comply with certain measures of length in their proportions. They are perfect for small family homes, where only a few portions are stored.

Large bags: For these cases where the bag is larger than 30 cm, your best option is a sealer that does not generate limits like the portable ones that only have a limit at the end of the bag. These are usually used in cases of very large foods that need to be stored. Ideal for restaurants or large volume families.


If the sealer is something that you will use daily or only at specific moments, this is a point that you will have to analyse, because depending on the case that corresponds to you, there will be models more or less suitable for you.

Sporadic use for certain foods: When it is not for all types of food and you do not use it daily, a good alternative is the suction one, giving you greater food protection and durability, as these easily lose their suction power if you force them too much.

Frequent use: When you work constantly with the sealer, either at home or in a restaurant, it is best to use the thermal ones, as they have a longer life, so you will save the constant replacement that the suction one would require.

The more bags you seal per day, the more resistance you will need, so determine how often you will seal them. (Photo: Ozgur Coskun/


Depending on the material of the bag, there are sealers that will receive it and others that will not, so it is important that you know the specifications in each case, so that you do not choose the wrong bag at the time of purchase, as this could damage the machine.

Portable sealer: These sealers commonly handle a single temperature, ideal for one or two types of bag material, which is necessary to consult at the time of purchase. Plastic ones are usually included.

Heat sealer: These have a temperature gauge, which when adjusted allows you to handle a wide range of sealing materials. Almost any bag can be sealed with heat sealers, so they are excellent if you want to use different types due to factors such as quality or size.

Suction sealer: They handle not only a specific material, but also a particular type of bag. Although they guarantee greater safety and conservation, it is an additional expense that you should take into account if you decide to purchase this model. They are perfect for storing particular foods, especially if they need high conservation.


The appropriate dimensions of the sealing machine will be determined, by the food you want to seal. There are multiple variants of bag sealers that will give you a variety of options to choose from, you should be aware of so that you can be sure about what you are buying.

(Featured Image Photo: Ozgur Coskun/