There's nothing worse than capping your Mason jar with your leftovers with a regular lid, tossing it into your lunch bag, having it tip over, and leak over all everything! Well lunch time disasters are a thing of the past with our leak proof silicone sealing rings.

They fit many types of one piece Mason jar lids. They help with the gray Ball Leak-Proof lids, but bunch up a little.

The wide mouth seals are 86mm (3.4") outside diameter, 69mm (2.7") inside diameter, and 3.4mm (.13") thick.
The regular mouth seals are 70mm (2.75") outside diameter, 50mm (2") inside diameter, and 2.6mm (.1") thick.

Buy The Best!

Our platinum cured, sealing rings are also created with the highest quality silicone available. Silicone rubber can be cured by a variety of methods. Platinum catalyst curing is the most expensive method, but does not leave behind any byproducts. Most food grade silicone rubber is cured by a peroxide system, which is FDA approved for food contact, but does leave behind some unwanted compounds. Get the purest, food grade, uncolored silicone sealing rings for your jars!

Additional Features:

Durable - these silicone sealing rings can be used over and over again!
Easy to remove
Perfect fit for wide or regular mouth Mason jars
Dishwasher safe
Microwave safe
Freezer safe

These sealing rings are really useful for:

Fridge storage
Freezer storage
Pantry storage
Storing jars on their sides
Home made airlock fermenting lids
Fridge pickling

TIPS:
Don't over-tighten your lids or it can be difficult to get the lids off. Holding the lid under hot running water will help if you are having trouble removing the lid.

Any odor will disappear after washing them.

Leak Proof Silicone Sealing Rings Seals for Ball Plastic Caps