Overview - EN ISO 12822:2020 (26 H 126 crown finish)
EN ISO 12822:2020 specifies the dimensions of the 26 H 126 shallow crown finish for glass bottles used for beverages. The finish is designed to accept a 26 mm metal crown cap (shallow crown). This international CEN/ISO standard (second edition, 2020) supersedes EN 14635:2010 and defines the finish geometry, tolerances and important sealing details that ensure reliable capping, sealing and compatibility with capping equipment.
Key topics and technical requirements
- Finish type and purpose: 26 mm shallow crown finish (26 H 126) for beverage glass bottles designed for metal crown caps.
- Dimensional drawings: Design and critical dimensions are defined in Figures 1–5 (profile, shoulder, bore, sealing surface, and crimping edge).
- Critical dimensions (examples from document):
- Nominal crown diameter: 26 mm cap interface.
- Diameter measured 3 mm down from top: between 18.5 mm (max) and 17 mm (min).
- Minimum through-bore: 15.5 mm.
- Recommended crimping edge radius: between 0.5 mm and 0.8 mm, ideally near 0.5 mm.
- Sealing surface: Must be smooth, free of defects, and avoid contact between the crown cap liner compound and the internal mould parting line of the glass finish.
- Tolerances: General tolerances are aligned with ISO 9058 (Glass containers - Standard tolerances for bottles).
- Variations for one-way bottles: For non-returnable bottles the diameter at a specific location may be ≤ 18.5 mm subject to written agreement among bottler, glass manufacturer and crown cap maker.
- Equipment considerations: Construction limits and capping equipment may impose additional dimensional constraints on neck contour.
Practical applications and users
- Who uses this standard:
- Glass container manufacturers (neck and finish design)
- Bottlers and beverage producers (specifying bottle/cap compatibility)
- Crown cap manufacturers (cap design and liner interface)
- Capping equipment and filler OEMs (machine tooling and crimp settings)
- Quality assurance and compliance teams (incoming inspection, testing)
- Why it matters:
- Ensures interchangeability and reliable sealing between bottles and crown caps
- Reduces leakage, spoilage and production downtime from misfit caps
- Facilitates supply-chain compatibility across manufacturers and countries
Related standards
- ISO 9058 - Glass containers: standard tolerances for bottles (normative reference).
- EN 17177 - Glass packaging - Crown cap - 26 mm diameter, 6 mm height (related cap specification).
- Supersedes EN 14635:2010.
Keywords: EN ISO 12822:2020, 26 H 126 crown finish, glass packaging, crown cap dimensions, shallow crown finish, glass bottles, capping equipment, sealing surface.
