I use it everyday and think of my grandmother! I love her so much all hers are gone in house fire. So thanks! I love this jar! My grandmother left this world long time ago
Mason Jar Merchant
The Mason Bottle Plastic Cap will fit over the metal ring on any regular-mouth mason jar. The cap prevents leakage when secured over the Mason Bottle Silicone Nipple. When you’re on the go, the cap will protect the nipple and keep it sanitary too.
This product includes one polypropylene plastic cap.
100% Made in the USA
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The Original Mason Bottle or the Mason Bottle DIY Kit, if you're looking to add nipples or a sleeve to your order.
Free Shipping on most orders over $99 USD and ~$140 CAD
We'll replace or refund any broken arrivals—though it's a rare event!
Shop with confidence! Easy returns on eligible items.
Every order is carefully packed to ensure safe arrival.
Meet the Maker
Hi, I’m Marie, the heart (and muscle) behind Mason Jar Merchant. For me, mason jars are so much more than containers! A gift of beautiful vintage jars from my husband’s grandmother sparked a personal love for these versatile jars that quickly grew into a passion and I love sharing their possibilities with others.
As my collection grew, so did my creativity. I began crocheting cozies, painting lids, making custom straw tops, and of course, mason jar tumblers.
Today, Mason Jar Merchant is about more than jars—it’s about empowering people to live healthier, more sustainable and resilient lives. Every product we offer, from vintage jars to lids, tumblers, and accessories, is chosen with the hope that it inspires you to reduce waste, eliminate plastic, and embrace the simple joy of practical beauty.
I use it everyday and think of my grandmother! I love her so much all hers are gone in house fire. So thanks! I love this jar! My grandmother left this world long time ago