Silicone Ziplock Bags Brands We Serve
Why Choose Custom Silicone Ziplock Bags From Legensilico
- We offer ziplock bags with a sealing track that is formed directly during molding, ensuring accurate alignment and stable closure.
- Our silicone ziplock bags are made from platinum-cured, food-grade silicone material, which is safe, odorless, BPA-free.
- The ziplock mechanisms are designed to provide a tight seal but it can still be opened and closed smoothly.
- At Legensilico, we can also make the area around the seal to be thicker, which will also reduce the possibility of deformation and make the sealing to last longer.
- We can make special formulations to make ziplock bags that can seal strongly even if they are exposed to both freezing and high-heat conditions.
- We manufacture silicone ziplock bags that are reusable and can seal reliably even after countless rounds of opening and closings.
Your Reliable Custom Silicone Ziplock Bags Manufacturer In China | Legensilico
A good silicone ziplock bag greatly depends on how well they can seal the contents that are put inside. Unlike plastic zip bags, which rely on thin zipper strips, our silicone bags have molded sealing tracks which are aligned precisely to operate smoothly.
In terms of how effective the seal can perform, it depends on multiple factors. This includes the shape of the track, depth, and how much force it can compress. In our factory, we always make sure that these things are all perfect, because if these are not properly controlled, the bag may leak and won’t close securely. We can also print or mold directly your brand logo into the silicone ziplock bag.
Usually the overall structure of the silicone ziplock bag is molded as one piece. With this method, we can create a thicker and more durable structure. And of course, with our engineered and well-designed ziplock system, we can make a reusable storage bag for your brand. A solution that can safely hold both dry and liquid contents and can be used for longer without leaking.
Send us your inquiries and ask for an instant free quote for your silicone ziplock bags!
Common Silicone Ziplock Bags Customization Options
This type of silicone ziplock bags have printed measurement lines. Usually it uses ml/oz as a scale in measurement, so you can control how much liquid contents you want to put inside.
1.5 Liter silicone ziplock bags are commonly used for storing food items. These are perfect for sous vide and other high-temperature cooking.
This silicone ziplock bags include a reinforced hole above the ziplock, to hang it easily on kitchen hooks or display racks, without tearing.
Usually, this type of bag has a stable base that helps the bag to remain in an upright position. This design makes storing much easier and without mess.
The handle is usually placed at the top of this silicone ziplock bag. This design is very helpful to carry the bag easily without leaking.
These small bags for jewelry are typically 50-150ml capacity, which are designed to store and pack rings, earrings, and other small accessories.
These silicone ziplock bags have a one-way air valve to remove the air out using a hand pump or a vacuum device. Removing the air also protects the contents inside to last longer.
Most designs of this silicone ziplock bag have external magnets or reinforced structures with magnets. These are excellent in airtight sealing, and at the same time space-saving.
Aside from the ziplock mechanism at the top of this silicone bag, it also has a threaded cap that is designed to easily pour the contents.
This type of silicone ziplock bag has a sealing strip that you can press together to close. The seal has two interlocking silicone ridges to provide an airtight sealing.
This type of customization to silicone ziplock bags is done to make the opening and closing of the bag to be much easier. It also provides a better control in pouring liquid contents because of the solid structure of its opening.
The additional slider bar of this type of silicone ziplock bag is very helpful in making the closing and opening much smoother–way better than traditional pinch-seal designs.
Ziplock System Customization Options
Seal Track ConfigurationYou can choose to put a single or double track, or more, for your ziplock bags, depending on the sealing strength that is required for your .
Seal Tightness ControlAt Legensilico, we can control the levels of how they can compress. This is important to make the silicone ziplock bags easy to open but can seal the contents securely.
Opening Structure DesignWe can also customize the width of the opening to make the filling and cleaning much easier.
Reinforced Seal EdgesAside from using pure silicone, the edges of the silicone ziplock bags can be reinforced to make its shape much stable and durable even after repeated use.
High-Precision Manufacturing
High-Accuracy Mold DevelopmentOur team makes sure that the final result of the product is perfectly aligned. Both sides of the ziplock can align correctly when closed.
Uniform Seal DepthTo craft your silicone ziplock bags, we use consistent molding processes to prevent the weak points along the track where it can be sealed.
Stable Material FlowWe carefully control all the steps of the production to make sure the areas for sealing are dense enough and reliable.
Batch Leak TestingEvery batch of your silicone ziplock bags order is checked if they meet the required performance in terms of being airtight and liquid-proof.
Why Clients Choose Legensilico As Their Silicone Ziplock Bags Factory

Legensilico has a team that specializes in engineering the ziplock systems to make sure that your silicone ziplock bags are airtight and leak-proof.

Tooling, mold making, and quality testing are all done inside our factory for faster sampling and full control of the whole production.

It has been our attitude to strictly check and test our silicone products first, so we can guarantee that you will receive the best quality.

We use platinum-cured, food-grade silicone that is highly-durable, flexible, and safe even if used for years.

Our team can adjust everything about your silicone ziplock bags–from the entire structure to thickness, size, and branding.

We can sign an NDA with our clients to protect all the designs, molds, and product developments. Thus, securing the unique products exclusively for your brand.
High-Precision Seal Design To Reduce The Risks Of Leakage
The sealing system is the most critical part of a silicone ziplock bag. One of the common issues about silicone ziplocks is that they may leak thin liquid contents and it cannot close securely, the sealing might collapse if the bag is full. These problems are usually caused by incorrect dimensions or the mold being used and if the materials are low-quality. To avoid these issues, we seriously consider the accurate dimensions of every critical part, including the width and depth of the track, and also the compression ratio needed. Before we arrange the delivery, every batch of your order is strictly checked and tested to make sure that it reaches the required sealing capability and is also easy to use.


Material And Molding Consistency
To make the ziplock to function smoothly and properly, the track must be dense enough and uniformed. And also during the manufacturing process, if the silicone material is not evenly distributed, it can create weak points, which will definitely affect how tight it can seal. At Legensilico we only assign our veteran team and use the most advanced machinery to control the molding process. Combining the expertise of our team and the state-of-the-art machinery we can achieve a consistent flow of the silicone material. Using platinum silicone also improves how flexible and durable our custom silicone ziplock bags are. This combination helps us to craft the final product that can maintain its shape and function even after being used for thousands of cycles.
Partner With A Manufacturer With 20+ Years Expertise


Legensilico is more than just a factory, we are a partner for your success. You can see us as your brand’s dedicated manufacturer that cares for the benefit of your business. With our experience in crafting silicone products for global brands including Fortune 500 brands, we know what will effectively work for every project. Our silicone ziplock bags are widely used in different markets worldwide, and every customization we make for our partner brands are secured and well-protected with our NDA. Our in-house tooling really helps us to make the processes much faster. We can easily develop and adjust molds quickly to improve alignment of the seal and control how much force it can compress. Just send us everything you want for your orders.
Different markets require different sealing performance. For example, some brands need bags with easy-open designs, while others need silicone ziplock bags with much tighter seals for liquids. We can customize the ziplock to match what you really need and what your market wants.
Our way of testing the real performance of our silicone ziplock bags is by using water and air pressure. This method is the best way to make sure that the ziplock can hold contents securely without leakings. For regular large-volume orders, we also conduct regular testing, by picking a unit randomly to monitor the quality of every batch.
How We Turn Silicone Into Reliable Products
We support customized silicone products from mold design and material selection to mass production and final quality inspection.
- Manufacturing Process
Read The Feedbacks From Our Global Clients
We produce single-track, double-track, and we can put more tracks depending on what you need. Each design is optimized for different uses such as dry goods or liquids.
We make it by controlling the dimensions, compression, and the flow of silicone material. To double check, every batch is tested using water or air pressure.
Yes, of course. We can adjust the seal structure and compression level to and make it according to what you really need.
No. Custom silicone ziplock bags we produce are made from platinum-cured silicone. This type of silicone is known for its durability, as it can maintain its shape even after repeated use. Reinforced designs can also further prevent the risks of deformation and extend its lifespan.
Yes, of course. Our team can develop custom structures of silicone ziplock bags based on your requests.
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