Rubber City Jars

Company Description:

Rubber City Jars is a family-owned mason-jar company specializing in functional, engineered jar solutions. We design and produce premium glass jars with built-in digital hydrometers sealed directly into the lid, giving customers accurate, real-time humidity control.

We are also the inventors of LockBand, a patented child-resistant safety ring that fits any standard or wide-mouth mason jar. LockBand adds a secure push-and-turn safety feature to ordinary lids, making traditional jars safer for homes, dispensaries, and retail environments.

This show marks the first public rollout of Nature-Keeper, our newest product line. Nature-Keeper combines our humidity-controlled lid with a terrarium-ready mason jar, allowing users to grow and maintain a miniature living forest directly inside the jar.

Our mission is to bring innovation, safety, and creativity to the classic mason jar.