Engineered for performance, built for everyday life. Our vacuum-insulated food containers are manufactured from premium 304 stainless steel and designed to maintain temperature from the first bite to the last — wherever the day takes you.
Every container in our food jar lineup is built around one goal: keeping your food exactly the way you packed it.
Double-wall vacuum insulation helps retain heat for extended periods during everyday use.
The same insulation barrier helps slow the absorption of ambient heat for cold foods and snacks.
Lid components and seals are manufactured free from BPA, ensuring food-safe contact surfaces.
304 (18/8) stainless steel interior resists rust, staining, and odors over years of daily use.
Precision-fitted lids create a secure closure, reducing the risk of spills in bags and backpacks.
Robust construction handles the bumps and drops of school bags, offices, and outdoor adventures.
Smooth, coasting-free interior walls mean food releases easily — no stubborn residue.
A single stainless steel food jar can replace thousands of single-use plastic containers over its lifetime.
U.S. shoppers choose insulated food containers to fit into real routines. Here's where our food jars fit in yours.
A brief look at what makes vacuum-insulated containers perform differently from standard food storage.
Between the inner and outer walls of each container sits a vacuum — an airless space that provides a thermal barrier. Because heat transfer relies on the movement of molecules, removing air molecules from this space dramatically reduces conduction and convection. The result is a container that holds temperature far longer than standard single-wall alternatives while keeping the exterior comfortable to touch.
Many competing products rely on interior paint or epoxy coatings to achieve a clean finish. Our food jars use bare 304 stainless steel on all food-contact surfaces — no coatings, no liners, no risk of flaking or chipping over time. The steel's natural non-porous surface resists absorption of odors and flavors, so yesterday's soup doesn't affect tomorrow's oatmeal.
A food jar is only as good as its seal. Our lids are engineered to a close tolerance and fitted with food-grade silicone gaskets to minimize the risk of leaks when properly closed. Wide-mouth openings make filling and cleaning easy, while the lid design allows for use with thick foods like stews, rice, or pasta — not just soups and beverages.
We're transparent about what goes into every container we manufacture. Below are the material standards our food jars are built to.
Only verify material claims that apply to your specific product lineup. Confirm specifications against your own test reports before publishing.
Not all food storage is equal. Here's a general comparison of the most common materials used in insulated food containers.
| Feature | 304 Stainless Steel | Plastic (BPA-free) | Glass |
|---|---|---|---|
| Vacuum insulation possible | Yes | No | No |
| Rust resistant | Yes | Yes | Yes |
| Odor resistant | Yes | Can absorb odors | Yes |
| Break resistant | Yes | Yes | No |
| Reusable long-term | Yes | Limited | Yes |
| No interior coatings required | Yes | Often coated | Yes |
How long does food stay hot?
Performance depends on several factors including the starting temperature of the food, ambient temperature, and how often the lid is opened. Double-wall vacuum insulation is designed to help food retain heat significantly longer than standard containers. For specific performance claims, please refer to the product listing for the model you are considering.
How long does food stay cold?
The same vacuum insulation barrier that retains heat also slows the warming of cold foods. Pre-chilling the container before adding cold food can help extend cold retention further. See individual product specifications for tested performance data.
Can I put it in the microwave?
No. Stainless steel is not microwave safe and should never be placed in a microwave. Transfer food to a microwave-safe dish to reheat, then return it to the container.
Is it dishwasher safe?
Hand washing is recommended to preserve the lid seals and exterior finish over time. High heat and harsh detergents in dishwashers may shorten the lifespan of gaskets and could affect the vacuum seal of the container walls. Please check the individual product page for specific care guidance.
Is it leakproof?
Our food jars feature a leak-resistant lid design with food-grade silicone gaskets. When properly closed, the lid creates a secure seal that reduces the likelihood of spills during everyday transport. We use the term "leak-resistant" rather than "leakproof" and recommend keeping containers upright during transport with thick liquids.
What grade of stainless steel is used?
We use 304 stainless steel, also known as 18/8 stainless steel, for the interior food-contact surfaces. This grade is widely recognized as food-safe, rust-resistant, and odor-resistant, and is used broadly in food service equipment and cookware.
Can it hold soup?
Yes. Our food jars are designed with a wide mouth and vertical walls to accommodate liquid-based foods like soups, stews, curries, and congee. The leak-resistant lid provides a reliable seal for everyday transport of liquid foods when the container is kept upright.
Can kids use it?
Yes — insulated food jars are popular for school lunches and after-school meals. The durable stainless steel construction is well-suited for daily use by children. For younger children, consider choosing a size that is easy to open independently. We also offer a dedicated kids cup range designed with younger users in mind.
Is it BPA-free?
Yes. The lid components and gasket seals used in our food jars are manufactured to be BPA-free. The stainless steel body contains no plastic components and no interior coatings.
Can I use it for ice cream or yogurt?
Absolutely. The cold-retention performance of vacuum insulation works for frozen and chilled foods as well as hot. Pre-chilling the container in the freezer before adding ice cream or frozen yogurt is recommended for best results.
Do you offer custom branding or OEM manufacturing?
Yes. Jiaxing Huading specializes in OEM and ODM production for buyers worldwide. We support custom logo engraving, color finishes, packaging design, and capacity adjustments. Visit our OEM/ODM page or contact us to discuss your requirements.
No middlemen. Factory-direct pricing with full quality control from our facility in Pinghu, Zhejiang.
Our manufacturing meets international quality and safety standards. See our certifications.
Custom logo, color, capacity, and packaging for your brand. Learn about our OEM services.
In-house design and engineering. View our R&D technology for more.
Our team is available to answer sourcing, customization, and logistics questions. Get in touch.
Advanced production equipment ensures consistency at scale. See our manufacturing capabilities.
Looking for something specific? Browse our other vacuum-insulated and thermal product categories.
