Description
xLeak-Proof storage with a premium silicone seal
Tidy, spill-free jar storage starts with a reliable seal. The Mason Jar Lifestyle platinum silicone lid inserts are designed for wide-mouth jars, delivering a snug, reusable solution that helps keep contents fresh in the fridge, freezer, or on the go. Crafted from platinum-cured silicone, these discs are BPA-free and plastic-free, offering a high-purity option that won’t leach harsh materials into foods. They’re also dishwasher, freezer, and microwave safe, making everyday use more convenient without sacrificing safety.
Why choose platinum silicone lid inserts
- Platinum-cured silicone provides high purity and a durable, food-safe seal that lasts.
- BPA-free and plastic-free construction helps minimize chemical exposure in daily storage.
- Dishwasher, freezer, and microwave safe for versatile handling.
- Leak-proof, airtight design improves storage confidence for leftovers, sauces, and snacks.
- Flexible, easy to trim if needed and compatible with a range of lids (not all lids are perfect fits).
- New small tab enhances removal without fuss, reducing spill risk during lid changes.
- Not for canning — designed to complement wide-mouth lids and jars, not for pressure canning processes.
Smart, real-life uses
- Fridge and freezer storage: keeps foods fresh and contained without contact with metal lids.
- Transport and on-the-go meals: line a lid to prevent leaks in bags or totes.
- Replace rusted metal flat lids and craft-friendly lining for candles or food jars.
- Line different lid types for a consistent seal across your Mason jars and compatible lids.
What you get and how to use
The set includes 10 reusable platinum silicone discs designed for wide-mouth jars (3" internal diameter, approximately 3.3 mm thick). They work with Mason Jar Lifestyle stainless steel lids, Ball plastic lids, and some other wide-mouth lids for a secure, leak-resistant seal. If a disc feels a touch large, you can trim it with scissors for a closer fit. For best results, ensure the jar and lid surfaces are clean before application.
From a Colorado-based family business, these inserts come with trusted customer support and a focus on helpful, thoughtful design. They represent a practical way to reduce plastic contact while expanding how you store, transport, and organize foods and small essentials.
FAQ
Q: Are these silicone lid inserts compatible with all wide-mouth lids?
A: They fit most wide-mouth lids, including Mason Jar Lifestyle stainless steel lids and Ball plastic lids; not for canning.
Q: Are they dishwasher, microwave, and freezer safe?
A: Yes, they are dishwasher, freezer, and microwave safe.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
- Choosing a selection results in a full page refresh.