Defects
Parallelism
How parallel the sealing surface (top of finish) is to the base — critical for vacuum integrity on twist-off and crown-finish bottles.
How Lean Glass works with this
In an audit or engagement.
This term appears across our hot-end audits, forming audits and Job Change Tool work. If you would like to discuss how it shows up in your plant, book a call — every engagement begins with an operational diagnostic, not a sales pitch.
30-minute call with a senior practitioner.
Bring a problem — leave with a direction.