Frequently Asked Questions

What type of glass container can I use?

Our EcoJarz lids are designed to be used with glass mason jars.  Cases of mason jars can be found at many major retailers.  We love re-use and upcycling, and encourage you to see if you can find a compatible jar in your pantry or recycling!  There are so many jars in this world that are compatible with the regular-mouth mason jar size, making reuse a great option with EcoJarz. Here are just a few products that come in containers that might work with your regular mouth EcoJarz lid:

Salsa, Peanut butter, Applesauce, Pasta sauce, Mayonnaise, Pickles, etc. 

What size jars do I have?

Mason jars come in several volumes, but the opening comes in just two sizes, Regular Mouth and Wide Mouth. Regular Mouth jars have a 2 3⁄8 inch (60 mm) inner diameter (and a 2 3⁄4 inch (70 mm) outer diameter), and Wide Mouth jars have a 3 inch (76 mm) inner diameter (and a 3 3/8 inch (86 mm) outer diameter).

What is the jar band?

The jar band is the metal ring for mason jars that secures the lid in place. This is how you fasten your EcoJarz top to the jar.  Most mason jars come with a tin jar band, but we suggest upgrading to our Stainless Steel jar bands!

Can I reuse EcoJarz mason jar lids?

Absolutely, sugar! Our Mason Jar Lids are designed for longevity and multiple uses. Regular Mouth or Wide Mouth, these lids are made with stainless steel and are BPA-free, ensuring no harmful chemicals leach into your preserves. They're perfect for drinks, storage, and all your jar-needs. And don't you worry, they're guaranteed for life!

Can I freeze mason jars with lids?

Of course, honey! Our EcoJarz mason jar lids are freezer safe. Whether it's Regular Mouth or Wide Mouth, they seal tightly, protecting your food. Just remember to leave some space at the top of the jar for expansion when freezing liquids! Our lids are designed to withstand the cold without losing their integrity.

How do I clean my EcoJarz products?

To clean your EcoJarz mason jar lids, you can simply scrub them in the sink like any other dish. The silicone gasket can be removed from the stainless steel lid for even deeper cleaning.  They're designed to be easy to clean and sterilize, ensuring they don’t harbor any residues or odors.

We sell a reusable pipe cleaner to make cleaning the straws easier. In addition, you can run any EcoJarz product through the dishwasher!

Are EcoJarz products dishwasher safe?

Yes! Both the Stainless and Silicone lids are completely dishwasher safe, even in the bottom rack, making cleanup a breeze. Whether it's the Regular Mouth or Wide Mouth, just pop them in the dishwasher, and they'll come out sparkling clean without any hassle.

Will the stainless lids rust?

Rust on any food container isn't ideal. But fret not, our Mason Jar Lids are made from stainless steel, which greatly reduces the risk of rusting. However, typical jar bands (rings) are often made from a different type of metal and do rust - sometimes quickly. So if you see rust on your EcoJarz lid, check the band to see if that is where it's coming from. Rust from the band can be cleaned off by rubbing it with a little bit of baking soda or steel wool.

Our Stainless Steel Jar Bands are made from the same high quality stainless steel that our lids are made from and will not rust, corrode, or discolor under any normal conditions.

What is the silicone made of?

Silicone is a flexible rubber-like material made primarily from Silicon (sand/rock) and Oxygen. It has many useful properties and is rapidly becoming commonplace in kitchens all over the world as a high-temperature and inert replacement to plastic. It is a great insulator, does not support bacterial growth, is UV stable, does not off-gas, is non toxic and is highly reusable.

What are the metal lids made of?

All of our metal mason jar lids are made of 304L Surgical Stainless Steel. 304L stainless steel resists  corrosion and is most commonly used in the food industry. Stainless steel has trace amounts of chromium (between 18% and 20%) and nickel (between 8% and 10.5%).

Do the color and finish of your products vary?

Yes. All of our products are made to order for EcoJarz, so you might notice slight variations in the product. For example, colors can vary slightly by batch.

Where are your lids made?

Ecojarz is a diverse business! We have a close relationship with a small Vietnamese company that provides the stainless steel and silicone EcoJarz lids to us.  We inspect, assemble, package, and ship each item from Denver, Colorado! Our stainless steel straws, skinny spoons, jar bands, and storage lids are made in Hong Kong.

How long will it take for my order to ship?

Orders typically are shipped out in 2-5 business days.

Do you ship internationally?

Yes, we ship worldwide! However it is more expensive to ship overseas. You will need to pay the Duties and Taxes on your order, the price of which varies depending on what country you live in.

Do you offer discount pricing for bulk orders?

We would love to work with you. Shoot us an email at for more details.

Frequently Asked Questions


I have another question.

Great! Shoot us an email at and we will do our best to provide an answer!