The Craft a Brew Kombucha Bottle Caps - Poly Cone Caps are reusable threaded bottle caps designed for sealing compatible kombucha bottles during carbonation and storage. These 38-400 poly cone caps help create a tight, leak-resistant seal for kombucha, hard seltzer, hard cider, and other bottle-conditioned beverages.

Each cap features a removable poly cone insert that helps improve sealing performance during carbonation. Designed for use with compatible threaded kombucha bottles, these reusable caps support repeated bottling and fermentation workflows.

Available in 8-count and 12-count packs, these bottle caps are suitable for replacing worn caps or expanding existing kombucha bottling setups.

Compatible with Craft a Brew Kombucha Bottling Kit bottles and other compatible 38-400 threaded bottle systems.