Precision 18mm (18/400) Closures

Engineered for a high-tolerance 18-400 thread finish, this collection is the professional standard for narrow-neck tubes and vials. Designed to provide a guaranteed, airtight seal for 98mm and 115mm glass pre-roll tubes and specialized pharmaceutical containers.

Available in Child-Resistant (CR) push-down designs and standard ribbed CT profiles, these 18mm caps ensure maximum moisture control to preserve product freshness and maintain strict state compliance.