Define the dispensing goal
Describe whether the user should pump, spray, pour or squeeze. Include the desired dose, feel and locking arrangement. Treat published component specifications as selection information and agree how the assembled pack will be evaluated with your contents.
| Route | Define first | Review next |
|---|---|---|
| Lotion pump | Pumping use | Formula, priming and dispensing |
| Sprayer | Spray use | Behaviour with the contents |
| Flip-top | Pour or squeeze | Seal, opening and handling |
| Screw cap | Open-and-use case | Seal and assembly |
Check more than the neck diameter
Review the thread, seal, assembly conditions, dip tube and dispensing path. Similar dimensions do not establish compatibility. Ask for the exact component identity and the basis for matching it to the proposed bottle. Keep unverified pairings clearly marked.
Create a repeatable assembly record
Keep the bottle and closure SKUs, colours, locking arrangement and sample decisions together. When substituting a part, state why and assess the consequences for appearance, sealing, use and distribution. Visual similarity is not an adequate change-control rule.
Your Project Checklist
- Define dispensing and locking
- Confirm the complete assembly identity
- Try the assembly with the contents
Frequently Asked Question
Does a matching diameter guarantee a fit?
Check the thread, seal and assembly conditions on the actual combination.
References and Editorial Note
The resources below provide technical background. The purchasing questions and checklists are compiled by 樽宇包装. Confirm project-specific decisions through drawings, technical evaluation and approved samples.
Sources checked: 19 October 2026