Best Silicone Stretch Lids

Silicone Stretch Lid vs Plastic Silicone Lids:

The first thing to understand is plastic silicone lids are not really stretchy. They do not have elasticity or flexibility like silicone stretch lids. So if you want your silicone lid to be flexible, then it will need to be made from a different material than the plastic ones. There are many types of materials used in making these stretchable silicone lids.

One of them is polyurethane (PU). PU is a non-porous, water resistant, strong and durable plastic. These stretchable silicone lids are made from this material. Another type of material used in making these stretchable silicone lids are nylon/spandex blend. This kind of material is stronger than PVC but less flexible than PU. Some manufacturers use both kinds of materials in their silicone stretchable lids. The most common one is called “Nylon” or “Spandex”.

What makes these silicone stretchable lids so special?

Well, they are made with a combination of two different materials. One of them is a polymer which allows the material to expand and contract under pressure. This means that when you squeeze the lid, it does not break into pieces because it expands and contracts under pressure. Another material used in making these silicone stretchable lids are elastomers. As the name suggests, these stretchable lids can be stretched into different shapes without breaking or tearing. Getting back to what we discussed earlier, elastomer does not mean that it is elastic. It means that the material is elastic in nature.

What are these made from? What kind of material is used?

You might have seen a few of these kinds of lids before and thought that the material is very similar to that of play doh. You would be right. These silicone stretch lids are made out of this material. A very soft and easy to mold material that is also resistant to wear and tear. You can stretch these lids over mason jars without them breaking into pieces. Another great feature about these materials is how easy they are to clean. You can simply wash it with water and mild soap, or even just a wet wipe. There is no need to put them in the dishwasher or oven.

How are these lids different from each other?

The main difference between these lids is the type of material that they are made from. If you’re looking for a safe and non-toxic option, then you might want to consider the first type of silicone stretch lids that I mentioned. These are safe to use for children and even adults with sensitive skin. These are very flexible. In fact, they can be stretched around the neck of a mason jar. When air is pumped out from underneath these lids, they create an air-tight seal around the mouth of a jar. There is a rubber gasket that goes inside these lids which creates an even tighter seal. This allows you to store food items inside jars for longer periods of time. You can use these for lunchboxes and bentos. If you’re looking for a more rigid lid, then you might want to try the second type of silicone stretch lids that I mentioned. These have a spandex and nylon blend which creates a rigid seal that does not bend. These are not as flexible as the first type of lids, but they can be stretched to accommodate larger sizes. You’ll need an airtight seal around your jars for these to work.

So which one of these materials is better?

When it comes to materials, you really can’t go wrong with any of the options that I mentioned. It really depends on what you are looking for when it comes to lids. For flexibility and comfort, you should choose one of the first option. If you’re looking for an airtight seal around your jars, then you should choose one of the second type. No matter which one you choose, you will probably have a great experience with any of these options.

Does it really matter which brand I buy?

There are a few factors that you should consider when choosing a brand. One of the first factors that you should look at is the price. While most of these silicone stretch lids are priced similarly to one another, there are a few outliers at either end of the spectrum. Make sure you pick one that fits your budget. The second factor that you should look at is the material used to make these lids. Some of these lids are made using food grade silicone while others are made from a less expensive substitute. While the difference may not be immediately noticeable, it is still a thing to keep in mind. Some buyers have also complained that cheaper lids have a tendency to tear and crack easier than their more expensive counterparts.

Sources & references used in this article:

Best technique for upper lid eversion by JS Wolffsohn, M Tahhan, M Vidal-Rohr, OA Hunt… – Contact Lens and …, 2019 – Elsevier

Stress-relaxation and fatigue behaviour of synthetic brow-suspension materials by …, M Edirisinghe, AW Rayment, SM Best… – Journal of the …, 2015 – Elsevier

Anti-Dust Silicone Lids for Tea Cup Cover Coffee-lianholee. com. sg by EF Jaguaribe, LL Medeiros, MCS Barreto… – Brazilian Journal of …, 2005 –